Asked Feb 24, 2019

A 0.025 M solution of lactic acid has a pH of 2.75. What is the ionization constant Ka for this acid?
What is the pKa?


Expert Answer

Step 1

Lactic acid (CH3CH(OH)CO2H), is an organic acid which can ionize a proton from the carboxyl group, producing lactate ion (CH3CH(OH)CO2-) and H+.

The generalized equation of dissociation can be represented as,

Step 2

Now the ionization constant (Ka) an...


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