Question 10

10.1 The incomplete equations below show the four steps involved in the industrial preparation of sulphuric acid (H2SO4). A and B represent two compounds.

Write down the NAME or FORMULA of:
10.1.1 Compound A (1)

10.1.2 Compound B (1)

10.1.3 The catalyst used in Step II (1)

The sulphuric acid formed in Step IV is used to prepare ammonium sulphate.
10.1.4 Write down a balanced equation for this reaction. (3)

10.2.1 Write down the meaning of NPK. (1)

10.2.2 The bag contains 4 kg of ammonium nitrate, NH4NO3, which is the only source of nitrogen. Calculate the mass of the fertiliser in the bag. (4)
TOTAL: 150

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