January 14, 2019
Paul Morgan Online A Level Chemistry Tutor
Online A Level Chemistry student completing Born Haber Cycle
January 4, 2019
December 9, 2017
Sulphuric Acid is reduced by Iodide ions to form Sulphur Dioxide and Iodine.
Reduction Half Equation
H2SO4 ----------> SO2
1. Balance the species that have been oxidised or reduced.
In this case the sulphur has been r...
How to calculate the limiting reagent in A Level Chemistry
October 28, 2017
Paul Morgan A Level Chemistry Tutor
Electron Energy Level Filling
Remember for atoms fill the 4s before 3d...
1s2s2p3s3p4s3d..(In order of increasing energy)
So Calcium (20 electrons)...
1s2 2s2 2p6 3s2 3p6 4s2
And Scandium (21 electrons)
1s2 2s2 2p6 3s2 3p6 4s2 3d1
What about ions?
There are two ways of l...
Enthalpy of Solution
Born Haber Cycle
How to Balance Redox Equations
A Level Chemistry Energy Level Filling