Answered

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What is the pH of a 0.20M solution of sodium benzoate, Na(C₆H₅COOH)? The Ka of benzoic acid, C₆H₅COOH, is 6.5×10⁻⁵.

a) 5.26
b) 8.74
c) 9.09
d) 11.56

Sagot :

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