Portable lanterns and stoves used for camping often use a mixture of hydrocarbon
ID: 932172 • Letter: P
Question
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 degree C. The enthalpy of vaporization of n-pentane is 27.6 kJ/mol, and its boiling point is 36.0 degree C. A phase diagram shows the states of a substance as a function of and Which of the following substances has a solid whose freezing point will decrease with increasing pressure?Explanation / Answer
57 d
58 b
59 d