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A beaker with 195 mL of an acetic acid buffer with a pH of 5.000 is...

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Chemistry

A beaker with 195 mL of an acetic acid buffer with a pH of 5.000is sitting on a benchtop. The total molarity of acid and conjugatebase in this buffer is 0.100 M. A student adds 5.30 mL ofa 0.480 M HCl solution to the beaker. How much will the pHchange? The pKa of acetic acid is 4.740.

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

Answer & Explanation Solved by verified expert
3.9 Ratings (374 Votes)
Given the pH of the acetic acid buffer 5000 We can apply Hendersen equation to calculate the ratio of the moles of conjugate base and the acid pH pKa logCH3COO CH3COOH 5000 474 logCH3COO CH3COOH logCH3COO    See Answer
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