Consider the following two-step mechanism for a reaction: N O 2 (g)+C l 2 (g)ClN
ID: 567746 • Letter: C
Question
Consider the following two-step mechanism for a reaction: N O 2 (g)+C l 2 (g)ClN O 2 (g)+Cl(g)Slow N O 2 (g)+Cl(g)ClN O 2 (g)Fast You may want to reference (Pages 583 - 588) section 15.7 while completing this problem. Part A What is the overall reaction? Express your answer as a chemical equation. Identify all of the phases in your answer. SubmitRequest Answer Part B Identify the intermediates in the mechanism. Check all that apply. Check all that apply. Cl(g) ClN O 2 (g) N O 2 (g) C l 2 (g) SubmitRequest Answer Part C What is the predicted rate law?
k[NO2][Cl] k[ClNO2][Cl] k[ClNO2][Cl2] k[NO2][Cl2]Explanation / Answer
two-step mechanism for a reaction:
N O 2 (g)+C l 2 (g)ClN O 2 (g)+Cl(g)Slow
N O 2 (g)+Cl(g)ClN O 2 (g)Fast
The slowest step is the rate determining step which involves one molecule of NO2 and one molecule of Cl2(reactants)
So order of reaction with respect to NO2 is 1
Order of reaction with respect to Cl2 is 1
So total order is 1+1=2
The rate law is r= K[NO2][Cl2]