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Calculate the concentration of the lactate ion in a solution that is 0.100 M in lactic...

Calculate the concentration of the lactate ion in a solution that is 0.100 M in lactic acid (CH3CH(OH)COOH, pKa = 3.86) and 0.080 M in HCl.

a. 4.83 M
b.0.0800 M
c. 7.3×10−3 M
d. 3.65×10−3 M
e. 1.73×10−4 M
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