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Preparation of inorganic compounds: Mohr's salt, potash alum

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During the preparation of Mohr's salt solution (Ferrous ammonium sulphate), which of the following acid is added to prevent hydrolysis of Fe^2+ ion? Answer: 1. dilute sulphuric acid Key idea: mathrmFe²⁺ salts hydrolyse in water, so a little acid is added, and it must not oxidise mathrmFe²... Preparation of inorganic compounds: Mohr's salt, potash alum 1 answer