Answer to Question #110339 in General Chemistry for Madison

Question

Consider the mechanism below:

NO2 + F2 NO2F + F k1, slow

F + NO2 NO2F k2, fast

What is the rate law?

Answer 1

NO₂ + F₂ --^k1---NO2F + F, slow

F + NO₂ ---^k2---NO2F , fast

2NO₂+F₂ ---2NO₂F

the 1 step is rate determining

These are bimolecular reactions.

A + B-C. The following expression of the reaction rate is performed for them.

V=C_AC_B

Rate=k1[NO₂][F₂]

Therefore, the reaction rate for the balancing equation will also be

Rate=k[NO2][F2]