For the nitrogen fixation reaction, 3h2(g) + n2(g) 2nh3(g), kc = 6.0 × 10–2 at 500°c. if 0.250 m h2 and 0.050 m nh3 are present at equilibrium, what is the equilibrium concentration of n2? a. 3.3 m b. 2.7 m c. 0.20 m d. 0.083 m e. 0.058 m

b. 2.7 M

Explanation:

Hello,

In this case, by considering the law of mass action for the studied reaction:

Now, since the concentration is the unique unknown, solving for it one obtains:

Hence the answer is b.

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b is the correct answer

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