You are not expected to do any experimental work for this question. Ammonium sulfate is a salt used in fertilisers. Ammonium sulfate is prepared by neutralising dilute sulfuric acid with aqueous ammonia. Plan an experiment to prepare pure dry crystals of ammonium sulfate. Your plan should include the use of: • common laboratory apparatus • dilute sulfuric acid • aqueous ammonia • methyl orange indicator. No other chemicals should be used. Your plan should include: • the apparatus needed • the method to use. You may draw a diagram to help answer the question.

1. You are not expected to do any experimental work for this question. Ammonium sulfate is a salt used in fertilisers. Ammonium sulfate is prepared by neutralising dilute sulfuric acid with aqueous ammonia. Plan an experiment to prepare pure dry crystals of ammonium sulfate. Your plan should include the use of: • common laboratory apparatus • dilute sulfuric acid • aqueous ammonia • methyl orange indicator. No other chemicals should be used. Your plan should include: • the apparatus needed • the method to use. You may draw a diagram to help answer the question.[6]