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C₆H₅COONa is a salt of a weak acid C₆H₅COOH. A .10 M solution of C₆H₅COONa has a pH of 8.60.
1. calculate [OH^-] of C₆H₅COONa
2. calculate K for: C₆H₅COO^- + H₂O <--> C₆H₅COOH + OH^-
3. calculate K_a for C₆H₅COOH

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