Which one of the following salts is most acid | vedclass

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(C) The acidity of a salt solution depends on the extent of hydrolysis,which is determined by the charge density of the cation. $Fe^{3+}$ and $Al^{3+}

Vedclass · Accepted Answer

$FeCl_3$

Vedclass · Answer

(C) The acidity of a salt solution depends on the extent of hydrolysis,which is determined by the charge density of the cation. $Fe^{3+}$ and $Al^{3+}$ are highly acidic due to high charge density. However,$FeCl_3$ undergoes hydrolysis to form $Fe(OH)_3$ and $HCl$. Comparing the acidity,$FeCl_3$ is generally considered more acidic than $AlCl_3$ because $Fe^{3+}$ has a higher charge-to-size ratio and forms a more acidic solution upon hydrolysis in aqueous media. Therefore,the correct answer is $C$.

Which one of the following salts is most acidic in water?

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