EASY
AS and A Level
IMPORTANT
Earn 100

Explain Hess's law.

Important Questions on Lattice Energy

EASY
AS and A Level
IMPORTANT
Suggest why the position of hydrogen atoms in compounds is not usually determined by X-ray diffraction.
HARD
AS and A Level
IMPORTANT
Give value for the standard conditions of temperature and pressure.
MEDIUM
AS and A Level
IMPORTANT
Write equation describing the lattic energy of magnesium oxide.
MEDIUM
AS and A Level
IMPORTANT
Write an equation describing the lattice energy of potassium bromide.
MEDIUM
AS and A Level
IMPORTANT
Write an equation describing the lattice energy of sodium sulfide.
HARD
AS and A Level
IMPORTANT
The bond energy of the chlorine molecule is 244 KJ mol-1. Why is the standard enthalpy change of atomisation half this value.
MEDIUM
AS and A Level
IMPORTANT
Write equations, including state symbols, that represent the enthalpy change of atomisation of oxygen. 
MEDIUM
AS and A Level
IMPORTANT
Write equations, including state symbols, that represent the enthalpy change of atomisation of barium.