Hey guys! Stuck on some problems:

Question

1)Consider the following chemical reaction between gases:

2N2O(g) + O2(g)->4NO(g) + heat
The amount of O2 at equilibrium will be decreased by:

1. Adding more NO(g).
2. Increasing the pressure by decreasing the volume.
3. Removing N2O.
4. Adding a catalyst.
5. Decreasing the temperature.
My maybe answer: I know to use Le Chatelie's Principle, I know it is exothermic, I think maybe the answer is 2 (?)

Answer 1

to decrease O2 is to shift to right or adding more N20, OR removing NO, or removing the heat. or reducing pressure.

so decreasing temp works.

Answer 2

That makes sense! Just wanted to say thanks!