Question

A vertical cylinder containing some ideal gas is closed
at both ends. A frictionless piston is fitted in the cylinder
such that it divides the cylinder into two equal parts at
300K. Moles of gas in one part is double than that in
other part. To what temperature (in Kelvin) the cylinder
should be heated or cooled such that the volume of
upper part becomes three times that of lower part?

Answer 1

Hope this answer will help you

Answer 2

The Volume and Temperature are as shown in the above figure.

Initially,

P

lower

=P

upper