Question

What is a pv diagram?

Answer 1

It is a graph of pressure versus volume. It forms a `1//V`, and the area under the curve is the work done (by the gas left to right, on the gas right to left).

Explanation:

Pressure and volume are inversely related, so as pressure increases, volume decreases, with infinite pressure and zero volume as limits.

This forms a curve that is `P prop 1//V`.