The total molarity of acid and conjugate base

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Reference no: EM13709487

Problem- A beaker with 1.60*10^2mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 5.20mL of a 0.450M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760.

State your answer by means of three significant figures.

Reference no: EM13709487

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