What is the concentration of NO₂ in M ( mol/L) in the equilibrium mixture if the initial concentration of NO is 2.5 M and O₂ is 1.25 M respectively and the reaction is:
2 NO (g) + O₂(g) ⇌ 2 NO₂(g) KC = 1.1 x 10⁻⁵
a) 0.0034
b) 0.0069
c) 0.0023
d) 0.0046
e) 0.0093