A) hydrolysis of \[F{{e}^{3+}}\]
B) acidic impurities
C) dissociation
D) ionization
Correct Answer: A
Solution :
\[FeC{{l}_{3}}\], on hydrolysis gives acidic solution due to the presence of strong acid \[(HCl)\] and weak base \[(Fe{{(OH)}_{3}}\] in the solution. \[FeC{{l}_{3}}\xrightarrow{3{{H}_{2}}O}\underset{weak\text{ }base}{\mathop{Fe{{(OH)}_{3}}}}\,\,\,+\underset{strong\text{ }acid}{\mathop{3HCl}}\,\] Hence, solution is acidic.
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