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A 28.8 mL sample of 0.286 M diethylamine, (C2H5)2NH, is titrated with 0.346 M hydrochloric acid....

A 28.8 mL sample of 0.286 M diethylamine, (C2H5)2NH, is titrated with 0.346 M hydrochloric acid.

After adding 9.88 mL of hydrochloric acid, the pH is _____

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