Fertilisers
6 past-paper questions on Fertilisers · examined 2023–2023.
20236 questions
State which element, often present in fertilisers, is not present in this fertiliser.
Ammonium nitrate, NH4NO3, is prepared for use in fertilisers by neutralising ammonia with an acid. Which acid reacts with ammonia to produce ammonium nitrate? A ethanoic acid B hydrochloric acid C nitric acid D sulfuric acid
State why farmers spread fertilisers on their fields.
Write the word equation for the reaction between ammonia and sulfuric acid.
Ammonium sulfate can also be made in the laboratory by titrating ammonia solution with dilute sulfuric acid. Give one disadvantage of using this laboratory method to produce ammonium sulfate as a fertiliser compared with an industrial method.
In the laboratory, ammonium sulfate crystals can be made using ammonia solution and dilute sulfuric acid. The volume of ammonia solution required to neutralise 25 cm3 of dilute sulfuric acid is found by titration using an indicator. The results of the titration can be used to prepare a solution of ammonium sulfate. Pure, dry ammonium sulfate crystals can be made from this solution. Write a detailed method to make ammonium sulfate crystals starting with ammonia solution and dilute sulfuric acid.
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