Gasoline is a mixture of hydrocarbons, a major component of which is octane,CH3CH2CH2CH2CH2CH2CH2CH3. Octane has a vapor pressure of 13.95 torr at 25 degrees celcius and a vapor pressure of 144.78 torr at 75 degrees celcius. Use these data and the equation in part (a) to calculate the heat of vaporization of octane.

Question

Gasoline is a mixture of hydrocarbons, a major component of which is octane,CH3CH2CH2CH2CH2CH2CH2CH3. Octane has a vapor pressure of 13.95 torr  at 25 degrees celcius and a vapor pressure of 144.78 torr  at 75 degrees celcius. Use these data and the equation in part (a) to calculate the heat of vaporization of octane.

DrBob222 · Answer

Use the Clausius-Clapeyron equation.