The ache you feel in your muscles during strenuous exercise is caused by the acc

Question

The ache you feel in your muscles during strenuous exercise is caused by the accumulation of lactic acid, which has the structure shown above. The hydrogen atom in the COOH group is acidic, and it can be removed using base to form a COO- group. To determine the concentration of a solution of lactic acid, a chemist titrates a 16.75mL smaple of it with 0.1010 M NaOH, and finds that 10.43mL of titrant are required to reach the equivalence point. What is the concentration of the lactic solution in moles per liter? ___?___ M

Explanation / Answer

Molarity of lactic acid = 0.1010 x 10.43 / 16.75 = 0.063 M

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