Chapter 16, Problem 87IAE

From the observation that 0.0500M vinylacetic acid has a freezing point of $\text{-0}\text{.096}°\text{C}$ , determine Ka for this acid.

${\text{CH}}_{\text{2}}{\text{=CHCH}}_{\text{2}}{\text{CO}}_{\text{2}}{\text{H+H}}_{\text{2}}\text{O}\rightleftharpoons {\text{H}}_{\text{3}}{\text{O}}^{\text{+}}{\text{+CH}}_{\text{2}}{\text{=CHCH}}_{\text{2}}{\text{CO}}_{\text{2}}^{\text{-}}$