Question

Consider the chemical equation in equilibrium.

2H2(g) + O2(g) <---> 2H2O(g)

What will happen if the pressure of the system is increased?

A. The reaction will not change.
B. The reverse reaction will be favored.
C. The reaction will stop completely.
D. The forward reaction will be favored.

Answer 1

D. The forward reaction will be favored

Answer 2

D. The forward reaction will be favored

The left side has more molecules, so the reaction mixture will try to counter the increase in pressure by reducing pressure. The pressure reduction will be achieved by shifting equilibrium to the side with less molecules.