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JEE Main2007ChemistryIonic EquilibriumActual

Regular use of which of the following fertilizer increases the acidity of soil?

Options

  1. APotassium nitrate
  2. BUrea
  3. CSuperphosphate of lime
  4. DAmmonium sulphate

Correct answer

D. Ammonium sulphate

Step-by-step solution

( NH ₄ )₂ SO ₄ is a salt of strong acid and weak base, on hydrolysis it ill produce H ⁺ ion. This will increase the acidity of soil. aligned & ( NH ₄ )₂ SO ₄ 2 NH ₄⁺+ SO ₄²⁻ & NH ₄⁺+ H ₂ O NH ₄ OH + H ⁺ aligned Hence, (D) is correct answer.

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