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A beaker with 135 mLmL of an acetic acid buffer with a pH of 5.000 is...

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Chemistry

A beaker with 135 mLmL of an acetic acid buffer with a pH of5.000 is sitting on a benchtop. The total molarity of acid andconjugate base in this buffer is 0.100 MM. A student adds 4.70 mLmLof a 0.440 MM HClHCl solution to the beaker. How much will the pHchange? The pKapKa of acetic acid is 4.740.

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

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