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Write the equilibrium expression for acetic acid Please show step by step, thanks alot!

Write the equilibrium expression for acetic acid

Please show step by step, thanks alot!

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Answer #1

CH3COOH <-------------------------------------> CH3COO-   + H+

a                                                                      0                  0    ------------------------initial concentrations

-x                                                                   +x                 +x ------------------------after some time

a-x                                                                +x                 +x ------------------------at equilibrium concentrations

equilibrium constant = Kc = [CH3COO-][H+]/[CH3COOH]

                      Kc = (x)(x)/(a-x)

                     Kc = x2/(a-x)

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