10.2. Fertilisers
A subsection of Chemistry, 0620, through 10. Chemistry of the environment
Listing 10 of 92 questions
Ammonia is manufactured by combining nitrogen and hydrogen at high temperature and pressure. N2 + 3H2 2NH3 What does the symbol mean? Ammonia is used to make fertilisers. Explain why farmers spread fertilisers on the soil where they are going to grow crops. Some fertilisers are salts made by adding acids to ammonia. Give the name of the compound formed when ammonia reacts with nitric acid. Farmers use calcium oxide to treat acidic soils. Explain how calcium oxide helps treat acidic soils. Suggest why farmers need to treat soils which are too acidic.
0620_m17_qp_32
THEORY
2017
Paper 3, Variant 2
View
Questions Discovered
92