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why is the solubility of benzoic acid dependent on pH?

  • chem -

    Benzoic acid is C6H5COOH. It ionizes as
    C6H5COOH ==> H^+ + C6H5COO^-
    At low levels of H^+ the reaction shifts to the right; at high levels of H^+ the reaction shifts to the left. Read up on Le Chatelier's Principle.

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