Divine O.

asked • 10/01/18

Need help with solving this chemistry question

1a. Write a balanced equation and corresponding Ka expression for the ionization of the weak acid lactic acid(HC3H5O3, Ka=1.62x10^-4) in water

b. A buffer solution is prepared by dissolving together 0.020mol of lactic acid and 0.015mol of sodium lactate, NaC3H5O3, in enough water to make 250.0ml of the solution. Determine the pH of this solution.

1 Expert Answer

By:

J.R. S. answered • 10/01/18

Ph.D. University Professor with 10+ years Tutoring Experience

Divine O.

Thank you so much, really appreciate your effort.
 
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10/01/18

J.R. S.

tutor
You are must welcome. Hope it makes sense. 
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10/01/18

J.R. S.

tutor
I forgot the Ka expression. 
Ka = [H+][C3H5O3-]/[HC3H5O3]
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10/01/18

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