Consider the following changes imposed upon a sample of gas, assuming the variables not mentioned remain...?

Question

Consider the following changes imposed upon a sample of gas, assuming the variables not mentioned remain constant:

a. What happens to the pressure if the temperature in K is doubled?

b. What happens to the volume if the pressure is tripled?

c. What happens to the volume if the temperature decreases from 300K to 200K?

Answer 1

Use the gas formula

P*V = K*T, where K is a constant, T in ºK

a) P is proportional to T, so doubling T will double P

b) P*V = constant so tripling P drops V to 1/3 its original value.

c)  Volume is proportional to temperature, so volume decreases to 200/300 or 2/3 it original value.