Question

Consider the reaction: 

3NO (g) ⇆ N2O (g) + NO2 (g) 

What is the expression for Kc for this reaction?

Answer 1

$K_c = \frac{[NO]³}{([NO2][N2O])}$

The actual value will depend on the concentrations at equilibrium. Once a value is determined, the only factor which changes Kc is temperature