Q90 / 200 · NEET 2024 · Chemistry

During the preparation of Mohr's salt solution (Ferrous ammonium sulphate), which of the following acid is added to prevent hydrolysis of $\mathrm{Fe}^{2+}$ ion?

A
concentrated sulphuric acid
B
dilute nitric acid
Correct answer
C
dilute sulphuric acid
D
dilute hydrochloric acid

Solution

During the preparation of Mohr's salt, dilute sulphuric acid is added to prevent the hydrolysis of $\mathrm{Fe}^{2+}$ ion.

Hence, the correct answer is option: 'C'.

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