Question

what is the formula of the brown coloured compound which is formed when Ammonia gas is passed through aquous solution of ferric chloride?

Answer 1

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When ammonia solution (NH4OH) is passed through FeCl3 solution, the brown precipitate obtained is of ferric hydroxide or Fe(OH)3.

Reaction is:
FeCl3 + 3NH4OH ------> Fe(OH)3 + 3NH4Cl

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