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A beaker with 105 mL of an acetic acid buffer with a pH of 5.000 is...

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Chemistry

A beaker with 105 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 8.30 mL of a 0.470 MHCl solution to the beaker. How much will the pH change? The pKa ofacetic 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
3.7 Ratings (467 Votes)
pH 068 Explanation Henderson Hasslbalch equation is pH pKa logAHA where pKa pKa of weak acid A conjucate base CH3COO HA weak acid CH3COOH substituting the values 5000 4740 logCH3COOCH3COOH    See Answer
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