A chemistry graduate student is given 125. mL of a 0.80 M acetic acid (HCH₂CO₂) solution. Acetic acid is a weak acid with K=1.8 × 10. What mass of KCH3CO₂ should the student dissolve in the HCH₂CO₂ solution to turn it into a buffer with pH = 5.04? You may assume that the volume of the solution doesn't change when the KCH,CO, is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.

Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
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 23PS: A buffer solution was prepared by adding 4.95 g of sodium acetate, NaCH3CO2, to 2.50 102 mL of...
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A chemistry graduate student is given 125. mL of a 0.80 M acetic acid (HCH₂CO₂) solution. Acetic acid is a weak acid with K=1.8 × 10. What mass of
KCH3CO₂ should the student dissolve in the HCH₂CO₂ solution to turn it into a buffer with pH = 5.04?
You may assume that the volume of the solution doesn't change when the KCH,CO, is dissolved in it. Be sure your answer has a unit symbol, and round it to 2
significant digits.
Transcribed Image Text:A chemistry graduate student is given 125. mL of a 0.80 M acetic acid (HCH₂CO₂) solution. Acetic acid is a weak acid with K=1.8 × 10. What mass of KCH3CO₂ should the student dissolve in the HCH₂CO₂ solution to turn it into a buffer with pH = 5.04? You may assume that the volume of the solution doesn't change when the KCH,CO, is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.
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