What is the pH of 0.65 M lactic acid? Construct and use an ICE table. Use...

What is the pH of 0.65 M lactic acid? Construct and use an ICE table. Use appropriate assumptions and test those assumptions. If an assumption is false redo the problem without the false assumption.

Please use an ICE table if you don't mind..

Expert Solution

CH3CH(OH)COOH ------------------------------> CH3CH(OH)COO^- + H^+

I 0.65 0 0

C -x +x +x

E 0.65-x +x +x

Ka = [CH3CH(OH)COO^-][H^+]/CH3CH(OH)COOH]

1.38*10^-4 = x*x/0.65-x

1.38*10^-4*(0.65-x) = x^2

x = 0.0094

[H^+] = x = 0.0094M

PH = -log[H^=]

= -log0.0094 = 2.0268

queen_honey_blossom answered 3 years ago

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