# Problem: The Ka of propanoic acid (C2H5COOH) is 1.34 × 10-5. Calculate the pH of the solution and the concentrations of C2H5COOH and C2H5COO– in a 0.643 M propanoic acid solution at equilibrium.pH =[C2H5COOH] =[C2H5COO-] =

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###### Problem Details

The Ka of propanoic acid (C2H5COOH) is 1.34 × 10-5. Calculate the pH of the solution and the concentrations of C2H5COOH and C2H5COO in a 0.643 M propanoic acid solution at equilibrium.

pH =

[C2H5COOH] =

[C2H5COO-] =

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