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 and weak base in the solution. \[FeC{{l}_{3}}+3{{H}_{2}}O\xrightarrow{{}}\underset{\begin{smallmatrix} weak \\ base \end{smallmatrix}}{\mathop{Fe{{(OH)}_{3}}}}\,+\underset{\begin{smallmatrix} strong \\ acid \end{smallmatrix}}{\mathop{3HCl}}\,\] Hence, solution is acidic in nature.
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