Chapter 17, Problem 97AE

The term proof is defined as twice the percent by volumeof pure ethanol in solution. Thus a solution that is 95%(by volume) ethanol is 190 proof. What is the molarity ofethanol in a 92-proof ethanol−water solution? Assumethe density of ethanol ${\text{(C}}_{\text{2}}{\text{H}}_{\text{5}}\text{OH)}$ is $\text{0}{\text{.79 g/cm}}^{\text{3}}$ and thedensity of water is $\text{1}{\text{.0 g/cm}}^{\text{3}}$ .