IIT/JEE Chemistry Practice #21: Properties of Gases

Dave explains problems related to gas properties, including calculating the pressure fraction of oxygen in a mixture, conditions for ideal gas behavior, and the diffusion rate ratio of helium to methane. He emphasizes understanding concepts like mole fraction, ideal gas assumptions, and diffusion equations.

What is the fraction of the total pressure exerted by oxygen when equal masses of methane and oxygen are mixed?

• 1/4

• 1/5

• 1/3

• 1/2

Under which conditions does a gas behave most ideally?

• High temperature and high pressure

• High temperature and low pressure

• Low temperature and low pressure

• Low temperature and high pressure

What is the ratio of the rate of diffusion of helium to methane?

• 2:1

• 3:1

• 1:1

• 1:2