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Given the concentration of aniline hydrochloride is [tex]2.0 *10^{-4} M[/tex]

Aniline hydrochloride is the conjugate acid of aniline a weak base.

pH can be calculated from [tex]pK_{a}[/tex] anilinium ion the conjugate acid of aniline.

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Answer: pH = 3.69

Explanation:

The pH of a solution of Aniline Hydrochoride can be calculated using the following mathematical expression :

pH = -log [H+]

= -log [2.0x10-4 M]

= 4 - 0.3010

pH of aniline hydrochoride solution = 3.69

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