The aqueous solution of AlCl_3 is acidic due | vedclass

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(A) $AlCl_3$ is a salt of a strong acid $(HCl)$ and a weak base $(Al(OH)_3)$.When $AlCl_3$ is dissolved in water,the $Al^{3+}$ ion undergoes cationic

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$Al^{3+}$ ion

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(A) $AlCl_3$ is a salt of a strong acid $(HCl)$ and a weak base $(Al(OH)_3)$.When $AlCl_3$ is dissolved in water,the $Al^{3+}$ ion undergoes cationic hydrolysis because it is a small,highly charged cation.The reaction is: $Al^{3+} + 6H_2O \rightleftharpoons [Al(H_2O)_6]^{3+}$.This hydrated complex further releases $H^+$ ions: $[Al(H_2O)_6]^{3+} + H_2O \rightleftharpoons [Al(H_2O)_5(OH)]^{2+} + H_3O^+$.The presence of $H_3O^+$ ions makes the aqueous solution acidic.

The aqueous solution of $AlCl_3$ is acidic due to the hydrolysis of

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