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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 6.20 mL of a 0.410 MHCl solution to the beaker. How much will the pH change? The pKa ofacetic acid is 4.740.  

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4.4 Ratings (817 Votes)
Given the volume of acetic acid buffer 195 mLTotal molarity of acetic acid and sodium acetate 100 MLet the molarity of acetic acid xtherefore molarity of sodium acetate 1xGiven pH of buffer is 5pKa of acetic acid 474Apply Henderson equationpH pKa log saltacid5 474 log 1xxlog 1x x 0261x x 10026    See Answer
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