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Under anerobic conditions, when our bodies lack enough oxygen to complete respiration, the product of the glycolytic pathway, pyruvate, is reduced to lactate in an effort to allow for energy production to continue. Lactate is the conjugate base of lactic acid, thus high lactate levels can lead to a drop in pH in our muscle cells. The ionization of lactic acid to lactate has a K, of 1.585 x 104. A solution containing a mixture of lactic acid and lactate was found to have a pH of 3.80. What percent of that solution was lactate?

Under anerobic conditions, when our bodies lack enough oxygen to complete respiration, the product of the glycolytic pathway, pyruvate, is reduced to lactate in an effort to allow for energy production to continue. Lactate is the conjugate base of lactic acid, thus high lactate levels can lead to a drop in pH in our muscle cells. The ionization of lactic acid to lactate has a K, of 1.585 x 104. A solution containing a mixture of lactic acid and lactate was found to have a pH of 3.80. What percent of that solution was lactate?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Under anerobic conditions, when our bodies lack enough oxygen to complete respiration, the product of the glycolytic pathway, pyruvate, is reduced to lactate in an effort to allow for energy production to continue. Lactate is the conjugate base of lactic acid, thus high lactate levels can lead to a drop in pH in our muscle cells. The ionization of lactic acid to lactate has a K₂ of 1.585 x 10-4. A solution containing a mixture of lactic acid and lactate was found to have a pH of 3.80. What percent of that solution was lactate?
Transcribed Image Text:Under anerobic conditions, when our bodies lack enough oxygen to complete respiration, the product of the glycolytic pathway, pyruvate, is reduced to lactate in an effort to allow for energy production to continue. Lactate is the conjugate base of lactic acid, thus high lactate levels can lead to a drop in pH in our muscle cells. The ionization of lactic acid to lactate has a K₂ of 1.585 x 10-4. A solution containing a mixture of lactic acid and lactate was found to have a pH of 3.80. What percent of that solution was lactate?
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Step 1

A solution of lactate and lactic acid forms a buffer solution and the pH of a buffer solution is determined by the Henderson Hasselbach equation. 

pH=pKa+log[conjugate base][weak acid]

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