1. Balance the following equations: (a) K + MgBr2 KBr + Mg
(b) CH4 + O2 CO2 + H2O
[Total: 2]

2. Write a balanced chemical equation for the following,
including state symbols:
a) An aqueous solution of barium chloride reacts with a dilute solution
sodium sulphate to from a precipitate of barium sulphate
and an aqueous solution of sodium chloride.
b) Write the ionic equation for the reaction in 2 (a).