Qualitative Analysis - Result Question 77
####80. Explain the following in not more than two sentences. A solution of $FeCl _3$ in water gives a brown precipitate on standing.
(1980, 1M)
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Solution:
- $FeCl _3$ is a salt of strong acid and weak base. In water, it hydrolyses slowly producing brown ppt of $Fe(OH) _3$.
$$ FeCl _3+3 H _2 O \longrightarrow 3 HCl+\underset{\text { Brown }}{Fe(OH) _3 \downarrow} $$
