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If the equilibrium constant for N2(g) + O2(g) ⇌ 2NO(g) is K, the equilibrium constant for 1/2 N2(g) + 1/2 O2(g) ⇌ NO(g) will be:

1. K^2
2. 2K
3. K
4. √K

Correct answer: √K

Solution

When the stoichiometric coefficients of a reaction are halved, the equilibrium constant is raised to the power of 1/2 (square root). Thus, the equilibrium constant for the given reaction is √K.

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