A beaker with 2 00102 mL of an acetic acid buffer with a pH of5 000 is...

A beaker with 2.00Ã—102 mL of an acetic acid buffer with a pH of 5.000 is...

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Chemistry

A beaker with 2.00Ã—102 mL 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 M. A student adds 7.20 mL ofa 0.450 M HCl solution to the beaker. How much will the pH change?The pKa of acetic acid is 4.740. Express your answer numerically totwo decimal places. Use a minus ( âˆ’ ) sign if the pH hasdecreased.

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4.3 Ratings (681 Votes)

Solution pH 500 total molarity 0100 M Volume 200 ml Volume of HCl added 720 ml Molarity of HCl 0450 M Change in the pH Lets find the ratio of the acid and conjugate base at initial pH PH pka log baseacid Xy 0100 500 474 log See Answer

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