The equilibrium constant for the reaction NO(g) 1/2 N2(g) + 1/2 O2(g) is Keq = 5

Question

The equilibrium constant for the reaction

NO(g) 1/2 N2(g) + 1/2 O2(g)

is Keq = 5.81e-01 at 11514 K. Calculate Keq for the reaction 1/2 N2(g) + 1/2 O2(g) NO(g) at this temperature and figure out whether the equilibrium favors N2 and O2 or NO at this temperature. Pick the correct choice from below.

a) Keq = 1.31e+00; At this temperature the reaction favors NO.
b) Keq = 2.97e+00; At this temperature the reaction favors N2 and O2.
c) Keq = 7.62e-01; At this temperature the reaction favors NO.
d) Keq = 1.72e+00; At this temperature the reaction favors NO.
e) Keq = 3.38e-01; At this temperature the reaction favors NO.

Explanation / Answer

Keq for 1/2 N2(g) + 1/2 O2(g) ----> NO(g) = 1 / 5.81e-01 = 1.72 d) Keq = 1.72e+00; At this temperature the reaction favors NO.

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