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IIT JEE

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Physical Chemistry

General Topics & Mole Concept

Quick practice

Question 1 of 5

For the reaction equilibrium 

\mathrm{N}_{2} \mathrm{O}_{4(\mathrm{g})} \rightleftharpoons 2 \mathrm{NO}_{2(\mathrm{g})} the concentration of \mathbf{N}_{2} \mathbf{O}_{4} and \mathbf{N}\mathbf{O}_{2} at equilibrium are 4.8 \times 10^{-2} and 

1.2 \times 10^{-2} mol L^{-1} respectively. The value of K_c for the reaction is 

A

3 \times 10^{3} \mathrm{mol} \mathrm{L}^{-1}

B

3.3 \times 10^{2} \mathrm{mol} \mathrm{L}^{-1}

C

3 \times 10^{-1} \mathrm{mol} \mathrm{L}^{-1}

D

3 \times 10^{-3} \mathrm{mol} \mathrm{L}^{-1}

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