Q. A solution of $FeCl_{3}$ in water acts as acidic solution due to
A) Hydrolysis of $Fe^{3 +}$
B) Acidic impurities
C) Dissociation
D) Ionisation
Explanation
(a)
$FeCl_{3}$ on hydrolysis gives acidic solution due to the presence of strong acid $(HCl)$ and weak base $(Fe(OH)_{3})$ in the solution.
$FeCl_{3}\overset{3H_{2}O}{\rightarrow}\ Fe(OH)_{3}\ \ \ \ \ + \ \ \ \ \ \ \ \ 3HCl$
Weak base strong acid
Hence, solution is acidic.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.