Calculate the vapor pressure of ethanol, CH₃CH₂OH, in a water solution containing 65.0% ethanol by volume at 19.0 °C. The vapor pressure of pure ethanol at 19.0 °C is 40.0 torr. The density of ethanol is 0.789 g/mL and the density of water is 1.000 g/mL.
a) 26.0 torr
b) 34.8 torr
c) 29.5 torr
d) 31.2 torr
