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During exercise when the body lacks an adequate supply of oxygen to support energy production, the pyruvate that is produced from the breakdown of glucose is converted into lactate. High lactate levels can lead to acidity in the muscle cells as some of the lactate hydrolyzes to lactic acid. The dissociation of lactic acid to lactate is shown in the reaction. Lactic acid has a pa of 3.86. Lactic acid dissociates into the lactate ion and a hydrogen ion. The hydrogen ion is lost from the carboxylic acid group on lactic acid. A solution containing a mixture of lactic acid and lactate was found to have a pH of 3.70. Calculate the ratio of the lactate concentration to the lactic acid concentration in this solution.

Respuesta :

Answer:

Explanation:

We can apply the henderson equation here to solve the problem  . Here the

lactate ion and lactic acid are forming buffer solution .

pH = pKa + log X⁻ / XH  ; here XA represents lactic acid and X⁻ represents lactate .

Given

3.7 = 3.86 + log X⁻ / XH

log X⁻ / XH = - 0.16

X⁻ / XH = 10⁻°¹⁶

= .69

ratio of concentration of lactate ion and lactic acid is .69

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