# Pv diagrams

PV diagrams.
a DIAGONAL straight line going down (negative slope) on a PV digram with P on y axis and v on x-axis.

The temperature of the gas ______________.
Choices:
Decreases then increase
Increase then decrease

At first I chose remains constant... but it was wrong. I tried to plug it in to the Ideal gas Law formula, and i get T to decrease the entire way. but that isn't a choice.

tiny-tim
Homework Helper
Welcome to PF!

Hi get_physical ! Welcome to PF!

Hint: what would be the shape of the pv curve if the temperature was constant?

draw several curves (on the same graph paper) for different constant temperatures …

how does the diagonal line cut those curves?

thankyou tiny-tim!

how do i mark this as solved?

tiny-tim