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N2 present at equilibrium

Question 14
The equilibrium constant (Kc) for the gas phase reaction 2 NH3 --> N2 + 3 H2 is 3.0 x 10-3 at some temperature. The reaction is started by placing a 0.040-mol sample of ammonia in an empty one-liter flask. When equilibrium is established how much N2 is present?

a.) 0.010 mol
b.) 0.013 mol
c.) 0.016 mol
d.) 0.019 mol

Solution Summary

It calculates the amount of nitrogen present at the equilibrium from the decomposition of NH3. The solution is detailed and well presented.