Chemistry - Complete Pblock- Question with Solution | TestHub

The aqueous solution of$\mathrm{A}\mathrm{l}\mathrm{C}{\mathrm{l}}_3$is acidic due to the hydrolysis of aluminium ion.

${\text{Al}}^{\text{3+}}\text{+}{\text{6H}}_{\text{2}}\text{O}\to {\left[{\text{Al(H}}_{\text{2}}{\text{O)}}_{\text{6}}\right]}^{\text{3+}}\text{+}{\text{3Cl}}^{-}$

$\underset{\left(\text{Salt hydrolysis}\right)}{{\text{Al(OH}}_{\text{2}}{\text{)}}_{\text{6}}^{\text{3+}}}\text{+}{\text{H}}_{\text{2}}\text{O}\to {\left[{\text{Al(H}}_{\text{2}}{\text{O)}}_{\text{5}}\text{(OH)}\right]}^{\text{2+}}\text{+}\underset{\left(\text{Acidic}\right)}{{\text{H}}_{\text{3}}{\text{O}}^{\text{+}}}$

$\mathrm{C}{\mathrm{l}}^{-}$does not hydrolyse.