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5 marksAcids, Bases and Salts

CSEC Chemistry · May/June 2008 · Paper 2 · Question 7(c)

The farmer, in addition to adding the recommended lime to the soil, also decides to add an ammonium fertilizer, thinking that it would increase his crop yield. Do you think that the farmer's decision to add both lime and ammonium fertilizer to the soil at the same time is a wise one? Give ONE reason for your answer. Include any relevant chemical equation.

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Other parts of this question

  1. 7(a)(i)State the importance of EACH of the following factors in plant growth: Mineral balance[1 mark]
  2. 7(a)(ii)State the importance of EACH of the following factors in plant growth: pH[1 mark]
  3. 7(a)(iii)State the importance of EACH of the following factors in plant growth: Humus content of the soil[2 marks]
  4. 7(b)(i)Briefly describe the test for the presence of ammonium ions in a soil sample.[2 marks]
  5. 7(b)(ii)The Officer finds the soil to be acidic and recommends the addition of lime. Suggest ONE possible reason for the acidic nature of the soil. Explain the effect…[4 marks]

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