Question

Aqueous solution of ferric chloride is acidic due to

• A. ionization
• B. polarization
• C. dissociation
• D. hydrolysis

Answer 1

Answer: (D)

Hydrolysis of salt of strong acid and weak base like $N{H}_{4}Cl,CuS{O}_4,FeC{l}_3$ etc give the acidic solution
$FeC{l}_3$ is the salt of strong acid and weak base, hence hydrolysis of $FeC{l}_3$ gives acidic aqueous solution

In such cases water becomes acidic because $H^{+}$ concentration becomes more than $O{H}^{-}$ concentration. It is also known as cationic hydrolysis