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4 marksNon-Metals

CSEC Chemistry · January 2016 · Paper 2 · Question 6(d)

Hence, draw a labelled diagram of the apparatus which could be used for the preparation of dry ammonia in the laboratory. Be sure to identify in your diagram where the reagents are placed, where the ammonia is dried, and where the ammonia is collected.

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  1. 6(a)Identify TWO reagents that are necessary for the laboratory production of ammonia.[1 mark]
  2. 6(b)Explain why concentrated sulfuric acid is not used. Include in your answer a balanced chemical equation.[3 marks]
  3. 6(c)(i)What TWO factors should be considered when choosing an appropriate method for the collection of gases in the laboratory?[2 marks]
  4. 6(c)(ii)Identify ONE of the three methods that is best suited for the collection of ammonia gas in the laboratory. Explain why EACH of the other two methods would NOT…[5 marks]

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