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Answer please! Regular use of the following fertilizers increases the acidity of soil?

Regular use of the following fertilizers increases the acidity of soil?

  • Option 1)

    Ammonium sulphate

  • Option 2)

    Potassium nitrate

  • Option 3)

    Urea

  • Option 4)

    Superphosphate of lime.

 
Answers (1)
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As we learnt in 

Ammonium sulphate undergoes the following reaction (NH_{4})_{2}SO_{4}+2H_{2}O\rightarrow 2H^{+}+SO_{4}^{2-}+2NH_{2}OH

This leads to acidity of soil

(NH_{4})_{2} SO_{4}     is a salt of a storng acid  and a weak base , on hydrolysis it produces H^{+} ion

(NH_{4})_{2} SO_{4}\rightarrow 2NH^{+}_{4}+SO^{2-}_{4}

NH^{+}_{4}+H_{2}O\rightarrow NH_{4}OH+H^{+}

 


Option 1)

Ammonium sulphate

This answer is correct

Option 2)

Potassium nitrate

This answer is incorrect

Option 3)

Urea

This answer is incorrect

Option 4)

Superphosphate of lime.

This answer is incorrect

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