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Lactic acid, which builds up in muscle tissue upon strenuous exercise, is partia

ID: 892398 • Letter: L

Question

Lactic acid, which builds up in muscle tissue upon strenuous exercise, is partially dissociated in aqueous solution:
What is the value of Kc if the extent of dissociation in 0.100 M lactic acid is 3.68% at 25 degrees Celsius? Lactic acid, which builds up in muscle tissue upon strenuous exercise, is partially dissociated in aqueous solution:
What is the value of Kc if the extent of dissociation in 0.100 M lactic acid is 3.68% at 25 degrees Celsius? Lactic acid, which builds up in muscle tissue upon strenuous exercise, is partially dissociated in aqueous solution:
What is the value of Kc if the extent of dissociation in 0.100 M lactic acid is 3.68% at 25 degrees Celsius? Lactic acid, which builds up in muscle tissue upon strenuous exercise, is partially dissociated in aqueous solution:
What is the value of Kc if the extent of dissociation in 0.100 M lactic acid is 3.68% at 25 degrees Celsius?

Explanation / Answer

LAH ---> LA-    + H+

c               0          0

c-ca           ca       ca

given: c=0.1 M and a = 0.0368

Kc = (ca)^2/ (c-ca)

       = c*a^2 / (1-a)

       = 0.1 * (0.0368)^2 / (1-0.0368)

        = 1.41*10^-4

Answer: 1.41*10^-4