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Chemistry help: Equilibrium constant

Nitrosyl chloride decomposes according to this reaction: 2NOCl(g) (equilibrium sign) 2NO(g)+Cl2(g)

0.600 atm of nitrosyl chloride is sealed in a flask and allowed to reach equilibrium. If 27% of the NOCl decomposes, what is the equlibrium constant for the reaction?

a. 0.00485

b. 0.781

c. 0.0300

d. 0.370

e. 0.0111

Solution Summary

The answer is in the attached file with a short explanation.