Consider the reaction 2NO2 →2NO+O2 , what is the half-life of the reaction?
Consider the reaction at 25◦C
2NO2 →2NO+O2
The overall rxn rate = k[NO2]2
The rate constant, k = 1.4 × 10−10 M−1 s−1
 If 2 moles of NO2 are initially present in a sealed 1.00 liter vessel at 25◦ C, what is the half-life of the reaction? Answer in units of y
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Verified answer
Salam,
The half-life equation for a second-order reaction dependent on one second-orderreactant is
t(1/2) = 1/k[A]o
=> t(1/2) = 1/{ (1.4 x 10^-10) (2) }
=> t(1/2) = 0.357 x 10^10
=> t(1/2) = 3.57 x 10^9 seconds
Rxn Rate