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A beaker with 140 mL of an acetic acid buffer with a pH of 5.00 is...

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Chemistry

A beaker with 140 mL of an acetic acid buffer with a pH of 5.00is sitting on a benchtop. The total molarity of acid and conjugatebase in this buffer is 0.100 M. A student adds 4.40 mL of a 0.310 MHCl solution to the beaker. How much will the pH change? The pKa ofacetic acid is 4.760.Express your answer numerically to two decimalplaces. Use a minus (-) sign if the pH has decreased.

Answer & Explanation Solved by verified expert
3.9 Ratings (660 Votes)
First we need initial concentrations to determine final pH for that we have two useful data First we know that the concentration of both together acid and base is 01 M x y 01 Also we know that the pKa is    See Answer
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