MEDIUM
AS and A Level
IMPORTANT
Earn 100

The first electron affinity of sulphur is -200 KJmol-1.  The second electron affinity of sulphur is +640 KJmol-1. Calculate a value for the enthalpy change S(g)+2e-S2-(g)

Important Questions on Lattice Energy

MEDIUM
AS and A Level
IMPORTANT
Write an equation representing the first electron affinity of iodine.
MEDIUM
AS and A Level
IMPORTANT
Write an equation representing the second electron affinity of sulphur.
MEDIUM
AS and A Level
IMPORTANT
Explain the trend in the first electron affinities going from Sulphur to tellurium.
EASY
AS and A Level
IMPORTANT
Write an equation to represent the first ionisation energy of caesium.
EASY
AS and A Level
IMPORTANT
Write an equation to represent the third ionisation energy of aluminium.
EASY
AS and A Level
IMPORTANT
Write an equation to represent the enthalpy change of formation of calcium oxide.
EASY
AS and A Level
IMPORTANT
Write an equation to represent the enthalpy change of formation of iron(III) chloride.
EASY
AS and A Level
IMPORTANT

Calculate the lattice energy for sodium chloride, given that:

HfNaCl=-411 kJ mol-1

HatNa=+107 kJ mol-1

HatCl=+122 kJ mol-1

IE1Na=+496 kJ mol-1

EA1Cl=-348 kJ mol-1