The acid-dissociation constant for benzoic acid (c6h5cooh) is 6.3×10−5. calculate the equilibrium concentration of c6h5cooh in the solution if the initial concentration of c6h5cooh is 6.3×10−2 m .

Answer is: the equilibrium concentration of benzoic acid is 0,06294 M.

Chemical reaction: C₆H₅COOH(aq) ⇄ H⁺(aq) + C₆H₅COO⁻(aq).

Ka(C₆H₅COOH) = 6,3·10⁻⁵.

c(C₆H₅COOH) = 6,3·10⁻² M.

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