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

question 92

Multiple Choice

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. What equilibrium expression shown below would allow you to solve for x and therefore enable you to solve for the equilibrium concentrations of each of the substances present at equilibrium?

• A) x²/(0.55 - x)(0.45 - x) = 4.1×10 ^{- 4}
• B) 2x²/(0.55 + x)(0.45 + x) = 4.1×10 ^{- 4}
• C) 2x²/(0.55 - x)(0.45 - x) = 4.1×10 ^{- 4}
• D) 4x²/(0.55 - x)(0.45 - x) = 4.1×10 ^{- 4}
• E) 2x²/(0.55 + x)(0.450 + x) = 4.1×10 ^{- 4}

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