For a fixed volume of gas at a fixed temperature, what will happen if the amount (number of moles) is doubled?

Question

For a fixed volume of gas at a fixed temperature, what will happen if the amount (number of moles) is doubled?

A. The pressure exerted by the gas will halve.

B. The pressure exerted by the gas will quadruple.

C. The pressure exerted by the gas will double.

D. The pressure exerted by the gas will remain unchanged.

Answer 1

Hi Noah,

I think the video platform may have some audio issues, but I've explained that the answer is (C) because according to the Ideal Gas Law, pressure and volume are directly proportional to each other. As one goes up, the other goes up by the same degree.

Ideal Gas Law: PV = nRT

I hope this helps!