1.

The pH of a solution at 25^(@)C containing 0.10 m sodium acetate and 0.03 m acetic acid is (pK_(a) for CH_(3)COOH = 4.57)

Answer»

4.09
5.09
6.1
7.09

Solution :`PH = pK_(a) + log.(["salt"])/(["ACID"]) = 4.57 XX + log.(0.10)/(0.03) = 5.09`.


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