Live stream of how I tutor a level chemistry online. Helped by fellow tutor Atul Rana in London whilst I'm in Burnley Lancashire. Demonstrating how to tutor a level chemistry online utilising online whiteboard bitpaper and it's inbuilt audio and video. Showing how being an online a level chemistry tutor can work over hundreds of miles. Includes an example a level chemistry lesson on how to write ionic equations. For the reaction between potassium carbonate and nitric acid. Connect with me: Paul Morgan A Level Chemistry Tutor Book your free A Level Chemistry Success Session with me here... https://calendly.com/alevelchemistrytutor/alevelchemistrysuccessplan Join my free private exclusive group for parents of and students studying A Level Chemistry here 👇 https://www.facebook.com/groups/alevelchemistrysupport/ Whiteboard https://www.bitpaper.io #HowItutorAlevelChemistryOnline #HowToTutorAlevelChemistryOnline #PaulMorgan

Relative Atomic Mass of an Element Visually Explained. Visually explaining how to calculate the relative atomic mass of magnesium from the percentage abundance of it's three isotopes. Magnesium 24, Magnesium 25 and Magnesium 26. Drawing 100 isotopes of Magnesium containing 2432 coloured dots to represent protons and neutrons to visually explain relative atomic mass of an element and how it is calculated from the percentage abundance of it's isotopes. 00:00 - 00:12 Introduction Atul and Paul 00:12 - 00:59 Magnesium and It's Isotopes 00:59 - 02:20 Magnesium 24 Nucleus 02:20 - 03:15 Magnesium 25 Nucleus 03:15 - 04:00 Magnesium 26 Nucleus 04:00 - 09:30 Relative Atomic Mass Visually Explained 09:30 - 13:00 Relative Atomic Mass Calculation 13:00 - 14.30 Relative Atomic Mass Discussion Further Information Paul Morgan - A Level Chemistry Tutor Website Book your chemistry lesson with me at.. https://www.alevelchemistrytuition.com Facebook https://www.facebook.com/ALevelChemistryTutor/ LinkedIn https://www.linkedin.com/in/onlinealevelchemistrytutor/ Atul Rana http://www.atulranatutors.co.uk Bitpaper - Whiteboard https://www.bitpaper.io #RelativeAtomicMassOfAnElementVisuallyExplained #PaulMorgan #AlevelChemistryTutor

Water of crystallisation question: Calculate the number of moles of waters of crystallisation in tin (II) chloride given the mass of hydrated tin chloride and mass of anhydrous tin {II} chloride. Recording of live stream with fellow tutor Atul Rana in London whilst I'm in Burnley Lancashire. Showing how online tuition can work over hundreds of miles.. For further information or if you would like to book chemistry tuition with me... Paul Morgan https://www.alevelchemistrytuition.com Atul Rana http://www.atulranatutors.co.uk Bitpaper https://bitpaper.io #WaterOfCrystallisation #AlevelChemistryTutor #PaulMorgan -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

Addition Polymers for AS and A Level Chemistry How to name and draw the monomers, polymers and repeating units for a variety of alkenes. Includes four examples of addition polymerisation for chloroethene, propene, acrylonitrile and ethenol. Further Information Paul Morgan - A Level Chemistry Book your free A Level Chemistry Success Session.... https://calendly.com/alevelchemistrytutor/alevelchemistrysuccessplan Join my free private exclusive group for parents of and students studying A Level Chemistry https://www.facebook.com/groups/alevelchemistrysupport/ #AdditionPolymersAlevelChemistry #AlevelChemistryTutor #PaulMorgan

Mass spectrum exam question taken from an a level chemistry paper.... a)Sketch a mass spectrum of bromine which contains equal amounts of bromine 79 and 81 isotopes b)Calculate the abundance and isotopic mass of an unknown xenon isotope given the relative atomic mass of xenon and the isotopic mass of the other xenon isotopes. Further information: Paul Morgan AS and A Level Chemistry Tutor Website https://www.alevelchemistrytuition.com Facebook https://www.facebook.com/ALevelChemistryTutor/ LinkedIn https://www.linkedin.com/in/onlinealevelchemistrytutor/ Bitpaper - Whiteboard https://www.bitpaper.io Atul Rana - Maths and Science Tutor http://www.atulranatutors.co.uk #MassSpectrumExamQuestion #AlevelChemistryTutor #PaulMorgan -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

Titration Exam Question for A Level Chemistry. How to find the Mr of MHCO3 by titrating with Hydrochloric Acid. Further Information Paul Morgan - A Level Chemistry Tutor Website https://www.alevelchemistrytuition.com Facebook https://www.facebook.com/ALevelChemistryTutor/ LinkedIn https://www.linkedin.com/in/onlinealevelchemistrytutor/ Bitpaper - Whiteboard https://www.bitpaper.io Atul Rana - Maths and Science Tutor http://www.atulranatutors.co.uk #AlevelChemistryTutor #PaulMorgan -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

Electrophilic Addition of Asymmetrical Alkenes. For the reaction of methylpropene and hydrogen bromide. Further Information Paul Morgan - A Level Chemistry Tutor Website https://www.alevelchemistrytuition.com Facebook https://www.facebook.com/ALevelChemistryTutor/ LinkedIn https://www.linkedin.com/in/onlinealevelchemistrytutor/ Bitpaper - Whiteboard https://www.bitpaper.io Atul Rana - Maths and Science Tutor http://www.atulranatutors.co.uk #ElectrophilicAddition #ElectrophilicAdditionOfAsymmetricalAlkenes #AlevelChemistryTutor -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

Electrochemical Series Question for A Level Chemistry. How to write half and full redox equations from electrode potentials and the electrochemical series. Further Information Paul Morgan - A Level Chemistry Tutor Website https://www.alevelchemistrytuition.com Facebook https://www.facebook.com/ALevelChemistryTutor/ LinkedIn https://www.linkedin.com/in/onlinealevelchemistrytutor/ Bitpaper - Whiteboard https://www.bitpaper.io Atul Rana - Maths and Science Tutor http://www.atulranatutors.co.uk #RedoxEquation #ElectrodePotential #AlevelChemistryTutor -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

Free Radical Substitution Exam Question. Showing how to write the propagation steps in the free radical substitution mechanism of a haloalkane. Related video: Free Radical Substitution Tips https://youtu.be/nKKcbks14hg Further Information Paul Morgan - A Level Chemistry Tutor Website https://www.alevelchemistrytuition.com Facebook https://www.facebook.com/ALevelChemistryTutor/ LinkedIn https://www.linkedin.com/in/onlinealevelchemistrytutor/ Bitpaper - Whiteboard https://www.bitpaper.io Atul Rana - Maths and Science Tutor http://www.atulranatutors.co.uk -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

Back Titration Calculation for A level chemistry. How to calculate the percentage of calcium carbonate in limestone using back titration. Back titrations are useful where there is a slow reaction between acid and base and normal titrations can't be used. Helped by fellow online tutor Atul Rana using online whiteboard bitpaper and it's inbuilt video and audio. Further Information: Paul Morgan A Level Chemistry Tutor Want help achieving a grade A in A Level Chemistry? Book your free A Level Chemistry Success Session here: https://calendly.com/alevelchemistrytutor/alevelchemistrysuccessplan Join my free private exclusive group for parents of and students studying A Level Chemistry. You can join here... https://www.facebook.com/groups/alevelchemistrysupport/ Bitpaper - Whiteboard https://www.bitpaper.io #BackTitration #AlevelChemistryTutor #PaulMorgan

An a level chemistry calorimetry calculation showing how to calculate the enthalpy of combustion of propan-1-ol given the experimental data. Helped by fellow online tutor Atul Rana using online whiteboard bitpaper and it's inbuilt video and audio. Including a discussion about the connection between calorimetry and Homer Simpson!!! MORE INFO or to BOOK TUITION Paul Morgan A Level Chemistry Tutor Want help gaining a grade A in A Level Chemistry 🤔 Book your free A Level Chemistry Success Session here 👇👇👇 https://calendly.com/alevelchemistrytutor/alevelchemistrysuccessplan Join my exclusive group for parents of and students studying A Level Chemistry here 👇👇👇 https://www.facebook.com/groups/alevelchemistrysupport/ #Calorimetry #AlevelChemistryTutor #PaulMorgan

How to balance redox half equations. Also how to use oxidation states to decide if a species has been reduced or oxidised. Helped by fellow online tutor Atul Rana in London whilst I'm in Burnley Lancashire. Using whiteboard #bitpaper and it's inbuilt video and audio Redox Equations in Alkaline Solution https://youtu.be/D7mQ7y6DwUk Further Information Paul Morgan - A Level Chemistry Tutor Website https://www.alevelchemistrytuition.com Facebook https://www.facebook.com/ALevelChemistryTutor/ LinkedIn https://www.linkedin.com/in/onlinealevelchemistrytutor/ Bitpaper - Whiteboard https://www.bitpaper.io Atul Rana - Maths and Science Tutor http://www.atulranatutors.co.uk #Redox #HalfEquations #AlevelChemistryTutor -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

Here I demonstrate how to balance a redox equation in alkaline (not alakaline!) solution for a difficult exam question posted in an A Level Chemistry facebook group. Using online whiteboard #bitpaper which is used for all my online tuition. First balance the half equations as for acid solutions and then add the same amount of hydroxide ions as hydrogen ions to both side of the equation. H+ ions and OH- ions together form water. The two half equations combine to make the full balanced equation. HOW TO BALANCE REDOX EQUATIONS: https://youtu.be/DcGOUcxBLZo Online Whitenoard https://www.bitpaper.io More information: Paul Morgan A Level Chemistry Tutor Website https://www.alevelchemistrytuition.com Facebook https://www.facebook.com/ALevelChemistryTutor/ LinkedIn https://www.linkedin.com/in/onlinealevelchemistrytutor/ #RedoxInAlkalineSolution #AlevelChemistryTutor #PaulMorgan #Bitpaper -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

Demonstrating 3 ways to calculate an enthalpy change using enthalpy of formation data. For calculating the enthalpy of combustion of methane. With Atul Rana in London whilst I'm in Burnley Lancashire. Using online whiteboard #bitpaper and it's inbuilt video and audio. Playlist Enthalpy Change Using Combustion Data https://youtu.be/kIriwqd8dIg Using Combustion AND Formation Data https://youtu.be/l_EHPHa2eKc More information: Paul Morgan Website https://www.alevelchemistrytuition.com Facebook https://www.facebook.com/ALevelChemistryTutor/ LinkedIn https://www.linkedin.com/in/onlinealevelchemistrytutor/ Atul Rana Maths and Science Tutor https://www.atulranatutors.co.uk Bitpaper https://www.bitpaper.io #EnthalpyChange #Hess's Law #AlevelChemistryTutor -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

Showing how to calculate an enthalpy change for the combustion of propanone when given BOTH enthalpy of formation and enthalpy of combustion data. Also showing 2 ways to set up the enthalpy cycle. Using online whiteboard bitpaper #bitpaper and collaborating with fellow online tutor Atul Rana whilst he's hundreds of miles away in London and I'm in Burnley Lancashire. Enthalpy Change Playlist Using Combustion Data https://youtu.be/kIriwqd8dIg Using Formation Data https://youtu.be/OdlrjvjQR_s More information Paul Morgan - A Level Chemistry Tutor Website https://www.alevelchemistrytuition.com Facebook https://www.facebook.com/ALevelChemistryTutor/ LinkedIn https://www.linkedin.com/in/onlinealevelchemistrytutor Atul Rana - Maths and Science Tutor http://www.atulranatutors.co.uk Bitpaper https://www.bitpaper.io #EnthalpyChange #EnthalpyOfFormation #EnthalpyOfCombustion #AlevelChemistryTutor -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

How to calculate the bond enthalpy of a N-N bond in hydrazine, a rocket fuel, using an enthalpy cycle. An alternative method to using the bond enthalpy equation which only works when reactants and products are in gaseous state. For this method see How to calculate bond enthalpy https://youtu.be/kbnWmSLZod8 Enthalpy Change Playlist Using Combustion Data https://youtu.be/kIriwqd8dIg Using Combustion AND Formation Data https://youtu.be/l_EHPHa2eKc How To Calculate Bond Enthalpy https://youtu.be/kbnWmSLZod8 More information: Paul Morgan A Level Chemistry Tutor Need help achieving a grade A in A Level Chemistry? Book your free A Level Chemistry Success Session with me here 👇👇👇 https://calendly.com/alevelchemistrytutor/alevelchemistrysuccessplan Join my exclusive group for parents and students of A Level Chemistry and learn more about my Chemistry Masterclass here 👇👇👇 https://www.facebook.com/groups/alevelchemistrysupport #BondEnthalpyCycle #AlevelChemistryTutor #PaulMorgan

Showing how to calculate bond enthalpy of rocket fuel when given the enthalpy change of a reaction. Calculating the N-N bond enthalpy in the rocket fuel hydrazine. Can use the equation Enthalpy Change = Bonds Broken - Bonds Formed Or just remember bond breaking is endothermic (positive) and bond formation is exothermic (negative) For both gaseous and non gaseous reactions using an enthalpy cycle as shown here will be more useful... HOW TO CALCULATE a BOND ENTHALPY USING A CYCLE... https://youtu.be/K_jN9LvAhKc ENTHALPY CHANGE PLAYLIST Using Combustion Data https://youtu.be/kIriwqd8dIg Using Combustion AND Formation Data https://youtu.be/l_EHPHa2eKc How To Calculate Bond Enthalpy https://youtu.be/kbnWmSLZod8 More Information: WEBSITE Paul Morgan - A Level Chemistry Tutor https://www.alevelchemistrytuition.com FACEBOOK https://www.facebook.com/ALevelChemistryTutor/ LINKEDIN https://www.linkedin.com/in/onlinealevelchemistrytutor/ Bitpaper - Whiteboard https://www.bitpaper.io Atul Rana - Maths and Science Tutor http://www.atulranatutors.co.uk #HowToCalculateBondEnthalpyInRocketFuel #PaulMorgan #AlevelChemistryTutor -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

How to calculate the pH of pure water at 50 degrees using the ionic product of water Kw. Helped by fellow online tutor Atul Rana hundreds of miles away in London using online whiteboard bitpaper and it's inbuilt audio/video Connect With Me: Paul Morgan A Level Chemistry Tutor Book you free A Level Chemistry success session.... https://calendly.com/alevelchemistrytutor/alevelchemistrysuccessplan Join my free private exclusive group for parents of and students studying A Level Chemistry here... https://www.facebook.com/groups/alevelchemistrysupport/ #pHofWater #AlevelChemistryTutor #PaulMorgan

How to use a quadratic equation to find the equilibrium moles of reactants and products when given the value of the equilibrium constant Kp. Helped by fellow online tutor Atul Rana in London whilst I'm in Burnley Lancashire using online whiteboard #Bitpaper. #Kp #AlevelChemistryTutor #PaulMorgan -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

Equilibrium Constant Kp Question 3. To solve this question requires algebra as no equilibrium moles are given in the question. With fellow online tutor Atul Rana in London whilst I'm in Burnley Lancashire. Using online whiteboard #bitpaper and it's inbuilt video and audio. More information: Paul Morgan Online A Level Chemistry Tutor https://www.alevelchemistrytuition.com Atul Rana Online Maths and Science Tutor http://www.atulranatutors.co.uk Online Whiteboard https://www.bitpaper.io #Kp #AlevelChemistryTutor #PaulMorgan -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

Calculating mole fractions, partial pressures and equilibrium constant Kp and it's units for gaseous equilibria when given reactant percentage dissociation. With Paul Morgan, A Level Chemistry Tutor, in Burnley Lancashire and fellow online tutoring colleague Atul Rana in London using online whiteboard #Bitpaper and it's inbuilt audio/video. Further Information Book your free A Level Chemistry Success Session.... https://calendly.com/alevelchemistrytutor/alevelchemistrysuccessplan Join my free private exclusive group for parents of and students studying A Level Chemistry... https://www.facebook.com/groups/alevelchemistrysupport/ Bitpaper - Whiteboard https://www.bitpaper.io #Kp #AlevelChemistryTutor #PaulMorgan

How to calculate Mole Fractions, Partial Pressures and the Equilibrium Constant Kp and it's units for Gaseous Equilibria where no total pressure is given in the question. With fellow tutor Atul Rana hundreds of miles away in London whilst I'm in Burnley Lancashire. Demonstrating how online tuition works using online whiteboard #bitpaper and it's inbuilt video/audio communication. More Information Paul Morgan A Level Chemistry Tutor https://www.alevelchemistrytuition.com Atul Rana Maths and Science Tutor http://www.atulranatutors.co.uk Bitpaper Whiteboard https://www.bitpaper.io #Kp #OnlineALevelChemistryTutor #PaulMorgan -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

How to calculate the pH of an acid buffer solution made from the reaction of a weak acid (ethanoic acid) and strong base (sodium hydroxide) to form the conjugate base (sodium ethanoate) and water. Playlist Acid and Base Mixture https://youtu.be/xs-DDMXrjhQ Diluted Acid https://youtu.be/Sjgu5i3jUgk pH of Water https://youtu.be/2yEO_jXmLN0 More information: Paul Morgan - A Level Chemistry Tutor Website https://www.alevelchemistrytuition.com Facebook https://www.facebook.com/ALevelChemistryTutor/ LinkedIn https://www.linkedin.com/in/onlinealevelchemistrytutor/ Atul Rana Maths and Science Tutor http://www.atulranatutors.co.uk Bitpaper Whiteboard https://www.bitpaper.io #pHofBufferSolution #alevelchemistrytutor #PaulMorgan -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

How to calculate the pH of a mixture of strong acid and strong base Excess Acid 1 Calculate the moles of H+ and OH- 2 Calculate the excess moles of H+ 3 Calculate xs H+ concentration [H+] 4 pH = -log [H+] Excess Alkali 1 Calculate the moles of H+ and OH- 2 Calculate the excess moles of OH- 3 Calculate the xs OH- concn [OH-] 4 [H+] = Kw ÷ [OH-] 5 pH = -log [H+] Further Information Paul Morgan A Level Chemistry Tutor Book your free A Level Chemistry success plan here.... https://calendly.com/alevelchemistrytutor/alevelchemistrysuccessplan Free A Level Chemistry Support Group An exclusive group for parents and students of A Level Chemistry who require a grade A You can join here 👇👇👇 https://www.facebook.com/groups/alevelchemistrysupport/ #pHofStrongAcidStrongBaseMixture #OnlineAlevelChemistryTutor #AlevelChemistry

Private A Level Chemistry Tutor Paul Morgan with fellow tutor Atul Rana demonstrates how to calculate the pH of diluted acids using the online whiteboard #bitpaper More information Paul Morgan Private A Level Chemistry Tutor https://www.alevelchemistrytuition.com Atul Rana Online Maths and Science Tutor http://www.atulranatutors.co.uk Online Whiteboard Bitpaper https://www.bitpaper.io #pHofDilutedAcids #OnlineALevelChemistryTutor #PrivateALevelChemistryTutor -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

Online A Level Chemistry Tutor Paul Morgan with fellow tutor Atul Rana shows how to calculate an equilibrium constant Kc and it's units using the online whiteboard bitpaper _______________________________________ (00:00) Hi, I'm Atul and I'm in London right now. Hi, I'm Paul and I'm in Burnley Lancashire. So we're going to have a look at the equilibrium constant Kc and calculate Kc. So I'll go straight into the question... 5 moles of A is mixed with 5 moles of B in a volume 12 dm3. When the equilibrium is established it contains 3 moles of C. Find the equilibrium constant Kc at this temperature. So the equation Kc is concentration of products over reactants raised to the powers of their moles in the balanced equation. So [C]^2 ••••••••••••••••••• [A]× [B]^2 ICE method = Initial Change Equilibrium Initial 5 moles A 5 moles B 0 moles C Equilibrium 3 moles C (change of +3) So Atul what are changes of A and B? (01:30) Well since number of moles B is the same as the number of moles of C. I expect the change of B to be 3 as well. (01:40) It'd be a change of 3. So our reactants go down. And the change in A is half that so 1.5. (01:55) Excellent so what would be the equilibrium moles. (02:02) B 5 - 3 = 2 moles A 5 - 1.5 = 3.5 moles Equilibrium 3.5 moles A 2.0 moles B 3.0 moles C (02:21) We need to find the concentrations. So concentration = moles ÷ volume. So Concn C 3/12 = 1/4 Concn A 3.5/12 = 7/24 Concn B 2/12 = 1/6 And if we put all that into the calculator, (1/4)^2 •••••••••••••••••••••••• = 7.71 (7/24) x (1/6)^2 = 7.7 ( 2 sig fig) (03:35) And the units? Instead of putting numbers in the equation, we put the units. (molesdm-3)^2 •••••••••••••••••••••••••••••••••••••••• (molesdm-3) x (molesdm-3)^2 So the squared terms cancel. So Atul with your maths head on could you tell me what the units would be for Kc? (04:19) Right so all we have left is the reciprocal of (molesdm-3) which is 1 ÷ (moldm-3) So when you move (moldm-3) to the top that is moles to the -1 and dm to the +3 so (mol-1dm+3) (04:40) So Kc is 7.7 mol-1dm3. (04:53) Great and the units of Kc depend on the number of moles of the reactants and the products in the equation. (05:08) Yes they do. And so you can have different values of units for Kc and you can even have no units if the concentrations cancel. (05:17) Of course. Can be dimensionless. And just to sum up trying to get a tangible meaning of Kc. I suppose it's how much towards the right the equilibrium is. The bigger that number the bigger the rightness to use an unscientific language. (05:42) Yes the bigger value (greater than 1) tells us the equilubrium lies to the right and the bigger the value the more to the right the equilibrium lies. And a value less than 1 lies to the left of the equilibrium. (05:58) And chemists interested in yield will be wanting a big value of Kc (06:03) Mm, that's pretty smart. And I suppose it's like an extension from GCSE where they look at yield in reversible reactions where the yield is a percentage but here you're looking at it more like an absolute number rather than percentage. (06:21) Yeah and at GCSE they look at what cause shifts in equilibrium. (06:26) Yeah. Perfect. That sounds great. Thanks very much for that. And I look forward to the next video. (06:34) Ok. Bye. _______________________________________ More information Paul Morgan - A Level Chemistry Tutor Website https://www.alevelchemistrytuition.com LinkedIn https://www.linkedin.com/in/onlinealevelchemistrytutor Atul Rana - Maths and Science Tutor http://www.atultanatutors.co.uk #OnlineALevelChemistryTutor #PaulMorgan #EquilibriumConstant -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

Online A Level Chemistry Tutor Paul Morgan with fellow tutor Atul Rana demonstrates molar calculations involving limiting and excess reagents using the online whiteboard bitpaper _______________________________________ (00:00) Hi, I'm Atul and I am in London. Hi, I'm Paul and I'm in Burnley Lancashire. So today we look at limiting reagents and molar calculations. So the question here is what mass of Iron is formed when 8 g Iron oxide reacts with 2.16 g of Aluminium. For limiting reagents we look at the moles of the reactants. First of all for Iron oxide and Aluminium, we write down the mass, the Mr and the moles. We have 8g of Iron Oxide and 2.16g of Aluminium. 27 is the atomic mass of Aluminium. For Iron Oxide there are 2 iron atoms and three oxygen atoms. So 2(55.8) + 3(16) =159.6 (03:12) We've been asked for the mass of Iron so Mr (Ar) = 55.8. Moles = Mass / Mr so Iron Oxide is 8 ÷ 159.6 = 0.05 moles and Aluminium is 2.16 ÷ 27 = 0.08 moles. (04:13) We've got to work out which of these is the limiting reagent. So if this was a one to one ratio, then our Iron oxide would be the limiting reagent because it's less moles. But it's not a one to one. It's a one to two so if you look at the Aluminium we can say that 0.08 moles of Aliminium, would react 0.04 moles of Iron Oxide and we've more than that. So this is in excess. Therefore the Aluminium is our limiting reagent (05:13) To work out the mass of iron that's formed we use the limiting reagent moles (05:27) The Aluminium and the Iron have a one to one ratio. So we would form exactly the same number of moles. Mass = Moles x Mr so 55.8 x 0.08 = 4.464g = 4.46 g of iron (3sf) (06:31) So we workout the limiting reagent and then we work at the maximum product formed. (06:37) I'm guessing that if they assumed that iron oxide is the correct one, just hypothetically, they'll soon find out that the Aluminium doesn't compute because that'd be like 0.1 or something. (07:21) Yes. They could work out the other the other way round as well. They could look at the, the iron oxide is 0.05 moles so therefore that would react with double the aluminium 0.1 moles. And therefore you can see that the aluminium is the limiting reagent there because 0.08 moles is less than 0.1 moles. (07:42) So you can choose either reactant and work out which is the excess and which is the limiting reagent. (07:48) Yeah. And it's great because in real life one is going to be in excess and one is not just for practical reasons. And it's something students might've seen in titrations for example. So they can extend that idea. (08:05) Yeah. And sometimes the question will tell you that a certain reactant is in excess, so then you just use the other reactant but where it doesn't then you have to work out which is the limiting reagent. _______________________________________ More Information: Paul Morgan | A Level Chemistry Tutor https://www.alevelchemistrytuition.com Atul Rana | Maths and Science Tutor https://www.atulranatutors.co.uk #LimitingReagents #LimitingReactants #OnlineALevelChemistryTutor -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

How to quickly and easily calculate volumes for a gaseous chemical reaction More information: Paul Morgan A Level Chemistry Tutor Need help achieving a grade A in A Level Chemistry? Book your free A Level Chemistry Success Session with me here 👇👇👇 https://calendly.com/alevelchemistrytutor/alevelchemistrysuccessplan Join my exclusive group for parents and students of A Level Chemistry here 👇👇👇 https://www.facebook.com/groups/alevelchemistrysupport/ #PaulMorgan #GasCalculations #OnlineALevelChemistryTutor

Online A Level Chemistry Tutor Paul Morgan in Burnley with Atul Rana in London demonstrates how to write a rate equation and calculate a rate constant and it's units using the online whiteboard #bitpaper. More information Paul Morgan - A Level Chemistry Tutor Website https://www.alevelchemistrytuition.com Facebook https://www.facebook.com/ALevelChemistryTutor/ LinkedIn https://www.linkedin.com/in/onlinealevelchemistrytutor/ Atul Rana - Maths and Science Tutor http://www.atulranatutors.co.uk Bitpaper https://www.bitpaper.io #PaulMorgan #RateEquation #OnlineLevelChemistryTutor -~-~~-~~~-~~-~- Please watch: "HOW I TUTOR A LEVEL CHEMISTRY ONLINE " https://www.youtube.com/watch?v=Z6vq7x368gU -~-~~-~~~-~~-~-

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