PLEASE ANSWER I NEED HELP ASAP

Question

What happens to the volume of a gas in a closed container if the temperature increases, but the pressure remains the same? Explain.

Answer 1

Your question can be answered with Charles's law: the volume of a gas and temperature (in Kelvin) are directly proportional. If the temperature increases, then the volume will increase (and vice versa). This is assuming the total moles and pressure remain constant throughout the changes.

Answer 2

I'd like to add that this can be derived just by knowing the ideal gas law. PV=nRT

In a closed container, the number of moles does not change, so n is constant.

If pressure remains the same, P is constant.

R is always a constant.

Begin with the ideal gas law PV=nRT

Moving the constants to one side (dividing by P*T) yeilds: V/T=nRT/P

Because n, R, and P are constants V/T = (constant) at any given time.

This is where we get Charles's law from.

If n, R and P are constant then:

V₁/T₁ = (Constant) =V₂/T₂

Rember that this works regardless of what units you use for volume but it only applies if the temperature is measured in absolute units (°K).