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OpenStudy (anonymous):
A 25.0-mL sample of 0.150 M butanoic acid is titrated with a 0.150 M NaOH solution. What is the pH before any base is added? The Ka of butanoic acid is 1.5 × 10-5.
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OpenStudy (gebooors):
pH = - log[H+] Approximation gives [H+] = square root(Ka * c) c is concentrationof the acid
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