Question

The initial rates listed in the following table were measured for the reaction between nitrogen dioxide and carbon monoxide that occurs in engine exhaust.

NO2(g)+CO(g)→NO(g)+CO2(g)NO2(g)+CO(g)→NO(g)+CO2(g)

Experiment	Initial [NO2][NO2]	Initial [CO][CO]	Initial Reaction Rate (M/sM/s)
1	0.100	0.100	5.00×10−35.00×10−3
2	0.150	0.100	1.13×10−21.13×10−2
3	0.200	0.200	2.00×10−22.00×10−2

What is the value of the rate constant and its units?

Express your answer to three significant figures and include the appropriate units.

Answer 1