Friday, 23 September 2011 @06:43
Q2 Ammonium sulfate is heated with sodium hydroxide. (i) Write a chemical equation (include state symbols) for the reaction.
Answer : (NH4)2SO4 (aq) + 2 NaOH (aq) --> Na2SO4 (aq)
+ 2 H2O (l) + 2 NH3 (g)
(ii) Describe a test for the gas.
Answer: The ammonia gas will turn damp red litmus paper to blue. Pungent smell will be detected.