Question

How does volume effect Le Chatelier's principle?

Answer 1

This principle dictates that systems at equilibriums will counteract external stress as to re-equilibrate.

Hence, when the volume of a container, wherein gases are reacting,

`3H_2(g) + N_2(g) to 2NH_3(g)`

decreases: the system will decrease the moles of gas present, and shift to the right in the former case.
increases: the system will increase the moles of gas present, and shift to the left in the former case.