chemistry question?

Question

In which reaction will decreasing the pressure cause more products to form?

A. 2CO(g) + O2(g)<> 2CO2(g)
B. CO2(g) + H2(g) <> CO(g) + H2O(g)
C. 2H2O2(g) 2H2O(g)<> + O2(g)
D. SrCO3(g) SrO(s) <>+ CO2(g)
E. 3O2(g) <> 2O3(g)

Answer 1

Based on Le Chaterlier's principle, decreasing the the pressure will push the reaction to the side that has more moles of gas.

In your set up, the following would have more products created on the left side.

A, C, E. None of them would produce more on the right side.