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A 5.65 −g sample of a weak acid with Ka=1.3×10−4 was combined with 5.20 mL of...

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Chemistry

A 5.65 −g sample of a weak acid with Ka=1.3×10−4 wascombined with 5.20 mL of 5.90 M NaOH and the resulting solution wasdiluted to 750 mL. The measured pH of thesolution was 4.30. What is the molar mass of the weak acid?

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Answer & Explanation Solved by verified expert
3.9 Ratings (640 Votes)
Answer We are given mass of weak acid 656 g Ka 13104 NaOH 590 M volume 520 mL Total volume 750 mL pH 430 We assume HA is    See Answer
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