Question: What is the pH of a buffer solution containing 0 . 3 5 moles of lactic acid and 0 . 6 5 mol of sodium

What is the pH of a buffer solution containing 0.35 moles of lactic acid and 0.65 mol of sodium lactate?
What will be the pH of the buffer after the addition of 25 mL of 0.25 M of NaOH?

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