Question

Aqueous solution of $FeC{l}_3$ is acidic because of _________.

• A. Cationic hydrolysis
• B. Anionic hydrolysis
• C. Both
• D. Zwitter ion hydrolysis

Answer 1

The correct option is A Cationic hydrolysis

$FeC{l}_3$
$F{e}^{3+}+H_{2}O\to Fe(OH{)}_3+H^{+}$
$\therefore$ Generation of $H^{+}$ ion
Thus $FeC{l}_3$ is acidic

Here Ferric ion has high +ve charge density. Hence, it gets hydrolysed readily and protons are set free which makes the aqueous solution of $FeC{l}_3$ acidic.
or FeCl3 is an salt of weak base and storng acid so it will under go cationic hydrolysis and the solution will be acidic..