Portable Lanterns and Stoves Used for Camping Often Use a Mixture

Multiple Choice

Portable lanterns and stoves used for camping often use a mixture of hydrocarbons for fuel. One such hydrocarbon is an alkane called n-pentane. These lanterns and stoves are often difficult to light on a cold day because the fuel has a low vapor pressure at low temperatures. Determine the vapor pressure of n-pentane on a night when the temperature is 0.0C. The enthalpy of vaporization of n-pentane is 27.6 kJ/mol, and its boiling point is 36.0C.

A) 228 torr
B) 367 torr
C) 184 torr
D) 479 torr
E) 209 torr