16. A chemist studying the reaction given by the balanced chemical equation: 2 NO(g) + O2(g) + 2 NO (9)
Chemist also collected the following data:
Run
[NO] mol/L [O] mol/L
Rate mol/Ls
1
0.22
0.15
0.45
2
0.22
0.30
0.90
3
0.44
0.15
1.80
a) What is the overall rate order? (6 marks)
b) What is the value and units of k? (3 marks)
c) A proposed mechanism for this reaction is given below, does this
proposed mechanism support the above information? (5 marks)
Step 1: NO(g) + O2(g) + NO2(g) + O(g)
Fast Step
Step 2: NO(g) + O(g) + NO2(g)
Slow Step
a= 3