Question

2NO(g)+O2(g)→2NO2(g)

For the above reaction, the following data were collected for the rate of disappearance of NO in the reaction:

Experiment	[NO] (M)	[O2] (M)	Initial Rate (M/s)
1	0.0126	0.0125	1.41×10−2
2	0.0252	0.0250	1.13×10−1
3	0.0252	0.0125	5.64×10−2

Part A:

What are the units of the rate constant?

a) s−1

b) M−1s−1

c) M−2s−1

d) M−3s−1

Part B:

What is the rate of disappearance of NO when [NO]=0.0725 and [O2]=0.0100?

Express the rate in molarity per second to three significant figures. (Units M/s)

Part E:

What is the rate of disappearance of O2 when [NO]=0.0725 and [O2]=0.0100?

Express the rate in molarity per second to three significant figures. (Units M/s)