Question

part 1) Consider a 500. mL buffer that contains 0.12 M HOCl and 0.080 M KOCl....

part 1) Consider a 500. mL buffer that contains 0.12 M HOCl and 0.080 M KOCl. What is the pH of this buffer if Ka (HOCl) = 3.5 x 10-8? HINT: Use the Henderson-Hasselbach equation.

part 2) Now, let’s add 2.5 mL of 10 M KOH to this buffer. a) What species are present in the buffer after the addition of the strong base? b) What is the pH of the buffer after the addition of 2.5 mL of 10M KOH? By how many units did the pH of the buffer solution change? HINT: Use the information you found in 2a.

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