Which of the following is the correct expression for the rate of the following reaction? Note: not all species are gaseous.

CuO(s) + H2S (g) <--> Cu(s) + H2O (g)

A.
[Cu] x [H2O] / ([CuO] x [H2S])

B.
[H2O] / [H2S]

C.
[CuO] x [H2S] / ([Cu] x [H2O])

D. None of these are correct

I know that it is not C or D. But, I am having a little trouble finding the answer and figuring this out... How do I go about figuring this out correctly? I need a little more guidance, please and thank you.

2 answers

Actually, I figured it out...it is B!
Yes...it is products over reactants.