Octane Has a Vapor Pressure of 40

question 29

Multiple Choice

Octane has a vapor pressure of 40. torr at 45.1°C and 400. torr at 104.0°C. What is its heat of vaporization?

• A) 39.0 kJ/mol
• B) 46.0 kJ/mol
• C) 590 kJ/mol
• D) 710 kJ/mol
• E) none of the above

---

Definitions:

Gas Law

A set of laws that describe the behavior of gases in relation to pressure, volume, temperature, and quantity.

Mole

A mole is a unit of measurement used in chemistry to quantify the amount of substance, equivalent to approximately 6.022 x 10^23 particles, atoms, molecules, ions, or electrons.

Gas

One of the four fundamental states of matter with indefinite shape and volume, composed of molecules in constant random motion.

Gas Law

Mathematical relationships that describe the behavior of gases, relating pressure, volume, temperature, and amount of gas.