What is the pH of a 0.15M Sodium Acetate Solution?

[flyers]

Homework Statement

Determine the pH of0.15 M solution of sodium acetate, ka = 1.8 x 10^-5

The Attempt at a Solution

Since there are no hydrogen ions that dissolve from sodium acetate, would I use the pH of water =7.0? Is the pH of water even affected by sodium acetate?

 

[Borek]

would I use the pH of water =7.0?

No.

Is the pH of water even affected by sodium acetate?

Yes.

Acetate anion is a weak base (conjugate base of acetic acid).

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[flyers]

OK, so the OH concentration can be found by this reaction

C2H3O2-+H2O <-> C2H3OOH + OH-?

 

[Borek]

Yes.

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[flyers]

Thanks a lot!