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30.0 mL sample of 0.10 M CH3COOH is titrated with 0.12 M NaOH. Determine the pH...

30.0 mL sample of 0.10 M CH3COOH is titrated with 0.12 M NaOH. Determine the pH of the solution;
a) Before the addition of the base. The Ka of CH3COOH is 1.8 × 10-5. (5 points)
b) After the addition of 25.0 mL of NaOH. The Ka of CH3COOH is 1.8 × 10-5. (5 points)

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