# Equilibrium reaction where the number of moles of reactants and products are the same [closed]

Le Chatelier's principle says that for an equilibrium reaction where all reactants and products are gases a change in pressure will change the number of moles of the product such to counteract the change in pressure.

My textbook also states that this only affects reactions in which the number of reactants and products are different.

I'm trying to think of a gaseous equilibrium reaction where the number of moles of reactants and products are the same.

All suggestions welcome.

• And the question is? Well I guess what it is, but what I infer isn't acceptable. In theory, you could get a list so long that it wouldn't fit into one post. Nov 5 '20 at 1:23

If $$T > \pu{100 °C},$$ and $$p \leq \pu{1 atm},$$ then water will be in the gas phase and:
$$\ce{CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g)}$$