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A beaker with 145 mLmL of an acetic acid buffer with a pHpH of 5.000 is...

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Chemistry

A beaker with 145 mLmL of an acetic acid buffer with a pHpH of5.000 is sitting on a benchtop. The total molarity of acid andconjugate base in this buffer is 0.100 mol L−1mol L−1. A studentadds 6.70 mLmL of a 0.360 mol L−1mol L−1 HClHCl solution to thebeaker. How much will the pHpH change? The pKapKa of acetic acid is4.760.

Express your answer numerically to two decimal places. Use aminus ( −− ) sign if the pHpH has decreased.

Answer & Explanation Solved by verified expert
4.5 Ratings (777 Votes)
From Henderson Hasselbalch equation pH pKa log BA B Base A Acid 5000 4760 log BA BA 105476 BA 17378 B 17378 A Also given that A B 145    See Answer
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