Chemistry in everydaylifeHard

Question

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

Options

A.Potassium nitrate
B.Urea
C.Superphosphate of lime
D.Ammonium sulphate

Solution

(NH4)2 SO4 is a salt of strong acid and weak base, on hydrolysis it ill produce H+ ion. This will increase the acidity of soil.
(NH4)2SO4 → 2NH4+ + SO42-
NH4+ + H2O ⇋ NH4OH + H+
Hence, (4) is correct answer.

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