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JEE Main 20245 AprilEvening Shift
Exam
JEE Main
Year
2024
Date
5 April
Shift
Evening Shift
Subject
Chemistry
Chapter
d and f Block Elements

JEE Main 2024 · 5 April · Evening Shift · Chemistry · d and f Block Elements

While preparing crystals of Mohr's salt, dil (H_2 SO_4) is added to...

While preparing crystals of Mohr's salt, dil (\mathrm{H}_2 \mathrm{SO}_4) is added to a mixture of ferrous sulphate and ammonium sulphate, before dissolving this mixture in water, dil (\mathrm{H}_2 \mathrm{SO}_4) is added here to :

Options

  1. Aprevent the hydrolysis of ferrous sulphate
  2. Bprevent the hydrolysis of ammonium sulphate
  3. Cmake the medium strongly acidic
  4. Dincrease the rate of formation of crystals

Correct answer

A. prevent the hydrolysis of ferrous sulphate

Step-by-step solution

Fe+2\mathrm{Fe}^{+2} ions undergoes hydrolysis, therefore while preparing aqueous solution of ferrous sulphate and ammonium sulphate in water dilute sulphuric acid is added to prevent hydrolysis of ferrous sulphate.
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