How would each of the following change the rate of the reaction shown here?

Question

Drag the appropriate items to their respective bins.
decreasing the temperature
adding some H2(g)
adding a catalyst
removing some NO(g)

Answer 1

decreasing the temperature: decrease the rate of the reaction
adding some H2(g): increase the rate of the reaction
adding a catalyst: increase the rate of the reaction
removing some NO(g): decrease the rate of the reaction