Question

The reaction of nitrogen dioxide with fluorine generates nitryl fluoride:

2NO2(g) + F2(g) --> 2NO2F(g)

To determine the rate law for this reaction, a chemist performed several initial-rate experiments using different initial concentration, with the details tabulated below.

Experiment (#) [NO2] (M)
[F2] (M) [NO2F] (M)
Initial Rate (M/s)
1 1.0 x 10-3 5.0 x 10-3 0.10 x 10-4 2.0 x 10-4
2 2.0 x 10-3 5.0 x 10-3 0.10 x 10-4 4.0 x 10-4
3 2.0 x 10-3 5.0 x 10-3 1.00 x 10-3 4.0 x 10-4
4 2.0 x 10-3 7.5 x 10-3 0.10 x 10-4 6.0 x 10-4
Determine the rate constant for this reaction.

Answer 1

Based on data given, Rate = k[NO2][F2]^1.2
Pick any row and substitute concentration and rate values. Solve for k. I got 115.4 M^-1.s^-1