Consider the following reaction in a sealed vessel at equilibrium with concentrations of N 2 = 3.0 10 -3 M , O 2 = 4.2 10 -3 M and NO = 2.8 10 -3 M . 2NO(g) <=> N2(g) + O2(g) If 0.1 mol L -1 of NO(g) is taken in a closed vessel, what will be degree of dissociation ( ) of NO(g) at equilibrium?

1. A. 0.00889
2. B. 0.0889
3. C. 0.8889
4. D. 0.717

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