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A 100.0 mL sample of 0.20 mol L-1 HF is titrated with 0.10 mol L-1 KOH. Determine the pH of the solution before the addition of any KOH. The Ka of HF is 3.5 × 10-4.
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The degree to which the result of a measurement, calculation, or specification conforms to the correct value or standard.
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