How does molar volume of a gas change when pressure increases?

1 Answer
Jul 17, 2014

Thanks for you great gas question.

As you increase the pressure on a gas, its volume will decrease. Think of pushing a piston on a tube of gas. As you decrease the volume, the pressure increases. If you put more volume in a tire, its pressure increases

Your question has to do with Boyle's Law. According to Boyle's Law, the volume and pressure of a gas are inversely proportional (as long as temperature remains constant).

What this boils down to is: if you increase the volume of a gas, its pressure decreases. If you decrease the volume of a gas, its pressure increases.

Good luck with your assignment.