Exhibit 14-4 Consider the Reaction Below and Its Corresponding Equilibrium

question 133

Multiple Choice

Exhibit 14-4 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 0.35 moles of N₂is mixed with 0.15 moles of O₂in a 1.00 liter reaction vessel and the reaction mixture is allowed to come to equilibrium. Concentration N₂O₂ 2 NO Initial 0.35 M 0.15 M Change At equilibrium
-Refer to Exhibit 14-4. 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 = 5.38×10 ^{- 6} M
• B) [NO]_eq = 2.32×10 ^{- 3} M
• C) [NO]_eq = 4.64×10 ^{- 3} M
• D) [NO]_eq = 6.56×10 ^{- 3} M
• E) [NO]_eq = 9.28×10 ^{- 3} M

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