As you saw in the video, the pH of a 0.1 M solution of acetic acid, HC2H3O2, (Ka ≡ 1.8 × 10−5) is 2.9. Based on this observation, which statement below best describes the pH of a 0.1 M solution of lactic acid, HC3H5O3, (Ka ≡ 1.4 × 10−4)?1) Since lactic acid has a smaller acid dissociation constant than acetic acid, a 0.1 M solution of lactic acid will have a larger pH value than a 0.1 M acetic acid solution.

2) Since lactic acid has a larger acid dissociation constant than acetic acid, a 0.1 M solution of lactic acid will have a larger pH value than a 0.1 Macetic acid solution.

3) Since lactic acid has a larger acid dissociation constant than acetic acid, a 0.1 M solution of lactic acid will have a smaller pH value than a 0.1 M acetic acid solution.

4) The pH of a 0.1 M acetic acid solution will be equal to the pH of a 0.1 M lactic acid solution since both are weak acids.