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 $\mathrm{H_2SO_4}$ is added here to :
Solution
<p>While preparing crystal of Mohr's salt, dil. $\mathrm{H}_2 \mathrm{SO}_4$ is added to prevent hydrolysis of ferrous sulphate.</p>
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Subject: Chemistry · Chapter: d and f Block Elements · Topic: Properties of Transition Metals
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