Chapter 8, Problem 8.93E

For the reaction: ${\text{H}}_{\text{2}}\left(\text{g}\right)+{\text{Br}}_{\text{2}}\left(\text{g}\right)\to \text{2HBr}\left(\text{g}\right)$, the reaction can be driven to the left by:

a. increasing the pressure.

b. increasing the hydrogen.

c. increasing hydrogen bromide.

d. decreasing hydrogen bromide.