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A chemistry graduate student is given 125. ml. of a 0.60M benzoic acid (HC,H,CO₂) solution. Benzoic acid is a weak acid with K-6.3x105. What mass of KC,H,CO, should the student dissolve in the HC H,CO, solution to turn it into a buffer with pH 4.557 You may assume that the volume of the solution doesn't change when the KC,H,CO, is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. e 0.9 X

A chemistry graduate student is given 125. ml. of a 0.60M benzoic acid (HC,H,CO₂) solution. Benzoic acid is a weak acid with K-6.3x105. What mass of KC,H,CO, should the student dissolve in the HC H,CO, solution to turn it into a buffer with pH 4.557 You may assume that the volume of the solution doesn't change when the KC,H,CO, is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. e 0.9 X

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter17: Principles Of Chemical Reactivity: Other Aspects Of Aqueous Equilibria
Section: Chapter Questions
Problem 89GQ: A buffer solution is prepared by dissolving 1.50 g each of benzoic acid, C6H5CO2H, and sodium...
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A chemistry graduate student is given 125. ml. of a 0.60M benzoic acid (HC,H,CO₂) solution. Benzoic acid is a weak acid with K-6.3 x 105. What mass of KC,H,CO, should the student dissolve in the HC H,CO, solution to turn it into a buffer with pH 4.557 You may assume that the volume of the solution doesn't change when the KC,H,CO, is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. B 0.9 X
Transcribed Image Text:A chemistry graduate student is given 125. ml. of a 0.60M benzoic acid (HC,H,CO₂) solution. Benzoic acid is a weak acid with K-6.3 x 105. What mass of KC,H,CO, should the student dissolve in the HC H,CO, solution to turn it into a buffer with pH 4.557 You may assume that the volume of the solution doesn't change when the KC,H,CO, is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. B 0.9 X
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