Question 11.3: The gas-phase reaction NO3 → NO2+1/2 O2 obeys second-order k...

Physical Chemistry [EXP-34184]

The gas-phase reaction

$NO_{3} → NO_{2}+\frac{1}{2} O_{2}$

obeys second-order kinetics. At a temperature of 20°C and an initial concentration of $NO_{3}$ equal to $0.0500 mol L^{−1}$ , the concentration after 60.0 minutes is equal to $0.0358 mol L^{−1}.$ Assuming the reverse reaction to be negligible, find the value of the forward rate constant.

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