Dinitrogen tetraoxide and nitrogen dioxide are two gases that exist in equilibrium at a range of temperatures. NO2 is a reddish brown gas while N2O4 is colorless.
If we represent the equilibrium as : N2O4(g) ⇌ 2 NO2(g)
We conclude that :
2. When the temperature is decreased the equilibrium constant, K:
a) Increases b) decreases c) Remain the same d) More information is needed to answer this question