a) Calculate the pH of a buffer prepared by dissolving 8.00 g of HC7H5O2 and 10.0 g NaC7H5O2 in enough water to make 500. mL of solution. Ka(HC;H5O2) = 1.0 x 10-6 %3D b) What will be the change in pH in the solution in part (a) when 15.0 mL of 1.0 M HCl is added?

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Chapter16: Acid-base Equilibria
Section: Chapter Questions
Problem 16.141QP: Ka for formic acid is 1.7 104 at 25C. A buffer is made by mixing 529 mL of 0.465 M formic acid,...
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a) Calculate the pH of a buffer prepared by dissolving 8.00 g of HC7H5O2 and
10.0 g NaC7H5O2 in enough water to make 500. mL of solution.
Ka(HC;H5O2) = 1.0 x 10-6
%3D
b) What will be the change in pH in the solution in part (a) when 15.0 mL of
1.0 M HCl is added?
Transcribed Image Text:a) Calculate the pH of a buffer prepared by dissolving 8.00 g of HC7H5O2 and 10.0 g NaC7H5O2 in enough water to make 500. mL of solution. Ka(HC;H5O2) = 1.0 x 10-6 %3D b) What will be the change in pH in the solution in part (a) when 15.0 mL of 1.0 M HCl is added?
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