N₂(g) + O₂(g) ⇄ 2NO(g) K_c = 4

question 62

Multiple Choice

N₂(g) + O₂(g) ⇄ 2NO(g) K_c = 4.8 × 10⁻³¹ 2NOBr(g) ⇄ 2NO(g) + Br₂(g) K_c = 0.50
Given the above equilibrium constant data at 25°C, what is the value of K_c at this temperature for the reaction
2NOBr(g) ⇄ N₂(g) + O₂(g) + Br₂(g) ?

• A)2.4 × 10 ⁻³¹
• B)9.6 × 10 ⁻³¹
• C)1.0 × 10 ³⁰
• D)4.2 × 10 ³⁰
• E)None of these choices are correct.

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