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

Question

Regular use of which of the following fertilizer increases the acidity of soil? (A) Potassium nitrate (B) Urea (C) Superphosphate of lime (D) Ammonium sulphate

Tardigrade Admin · Accepted Answer

(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)2 SO4 arrow 2NH+4 + SO2-4 NH+4 + H2O leftharpoons NH4OH + H+ Hence, (4) is correct answer.

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

Potassium nitrate

Urea

Superphosphate of lime

Ammonium sulphate

$(N H_{4})_{2} S O_{4}$ is a salt of strong acid and weak base, on hydrolysis it ill produce $H^{+}$ ion. This will increase the acidity of soil.
$(N H_{4})_{2} S O_{4} \to 2 N H_{4}^{+} + S O_{4}^{2 -}$
$N H_{4}^{+} + H_{2} O ⇌ N H_{4} O H + H^{+}$
Hence, (4) is correct answer.

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

Potassium nitrate

Urea

Superphosphate of lime

Ammonium sulphate

(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​)2​SO4​→2NH4+​+SO42−​ NH4+​+H2​O⇌NH4​OH+H+ Hence, (4) is correct answer.

$(N H_{4})_{2} S O_{4}$ is a salt of strong acid and weak base, on hydrolysis it ill produce $H^{+}$ ion. This will increase the acidity of soil.
$(N H_{4})_{2} S O_{4} \to 2 N H_{4}^{+} + S O_{4}^{2 -}$
$N H_{4}^{+} + H_{2} O ⇌ N H_{4} O H + H^{+}$
Hence, (4) is correct answer.