Exhibit 14-3 Consider the Reaction Below and Its Corresponding Equilibrium

Exhibit 14-3 Consider the reaction below and its corresponding equilibrium constant at 2000 C to answer the following question(s) :
N₂(g) + O₂(g) 2 NO (g) K c = 4.10 10 - 4 (at 2000 C)
Complete the table shown below for an experiment where 0.55 moles of N₂is mixed with 0.45 moles of O₂in a 1.00 Liter reaction vessel and the reaction mixture is allowed to come to equilibrium. Concentration N₂O₂ 2 NO Initial 0.55 M 0.45 M Change At equilibrium
-Refer to Exhibit 14-3. After solving for x above, what is the concentration of NO at equilibrium?
You may make any simplifying assumptions that may make the solution of x easier.

A) [NO]_eq = 6.44×10 ^{- 10}
B) [NO]_eq = 5.04×10 ^{- 3}
C) [NO]_eq = 1.01×10 ^{- 2}
D) [NO]_eq = 1.42×10 ^{- 2}
E) [NO]_eq = 2.01×10 ^{- 2}