Q2 Ammonium sulfate is heated with sodium hydroxide.

(i) Write a chemical equation (include state symbols) for the reaction. (NH4)2 SO4 (aq) + 2NaOH > Na2 SO4 (aq) + 2H2O (i) +2 NH3 (g)
(ii) Describe a test for the gas.
The gas will turn damp red litmus paper blue.