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The Reaction 2NO(g) + O2(g) →\rightarrow 2NO2(g) Has Δ\Delta Hr ο\omicron = -4 KJ

Question 13

Multiple Choice

The reaction 2NO(g) + O2(g) →\rightarrow 2NO2(g) Has Δ\Delta Hr ο\omicron = -4 kJ.mol-1.
A possible mechanism for this reaction is
2NO(g) Rapid equilibrium,K
ff
N2O2(g)
N2O2(g) +O2(g) →\rightarrow 2NO2(g)
Slow,K
If the activation energy for the reverse reaction is 225 kJ.mol-1.
What is the activation energy for the forward reaction?


A) Because an intermediate is involved, the forward activation energy cannot be calculated with the given information.
B) 111 kJ.mol-1.
C) 339 kJ.mol-1.
D) 114 kJ.mol-1.
E) 55.5 kJ.mol-1.

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