Which of the following would increase the rate of the forward reaction?

Question

N2 (g) 3H2 (g) --> 2NH3 (g) Heat

Removing nitrogen gas.

Increasing the concentration of NH3.

Increasing the pressure.

Decreasing temperature

Answer 1

Increasing the pressure would cause the system to move toward the side with the fewer gas moles to partially offset the added pressure. That direction is forward (to the right).

Decreasing the temperature would cause this exothermic reaction to produce more heat to partially offset the heat removed. That direction is forward ( to the right).

Answer 2

Decreasing temperature as it is an exothermic reaction.