Why is the aqueous solution of aluminium chloride acidic?

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Why is the aqueous solution of aluminium chloride acidic?

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Answer 1 · 2017-05-23T01:15:01

An aqueous solution of ${AlCl}_{3}$ $"AlCl"_3$ is a product of the the neutralization reaction between hydrochloric acid ( $HCl$ $"HCl"$ ) and aluminum hydroxide ( ${Al(OH)}_{3}$ $"Al(OH)"_3$ ).

$HCl$ $"HCl"$ is a strong acid, and ${Al(OH)}_{3}$ $"Al(OH)"_3$ is a weak base. When a strong acid solution and a weak base solution mix, the resulting saline solution will be slightly acidic, as the acid is stronger and "overpowers" the effects of the weak base, essentially.

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Why is the aqueous solution of aluminium chloride acidic?

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