Question

In: Chemistry

2 NO(g) + Cl2(g) --> 2 NOCl (g) Two proposed mechanisms for the reaction are given...

2 NO(g) + Cl2(g) --> 2 NOCl (g)

Two proposed mechanisms for the reaction are given below. Which is the better mechanism? Explain both why the better mechanism is better and why the worse mechanism is worse.

       Mechanism 1                                                        Mechanism 2

                           NO + Cl2 --> NOCl + Cl                                       Cl2 --> Cl + Cl

                           NO + Cl --> NOCl NO + Cl --> NOCl

NO + Cl2 --> NOCl + Cl

For the correct mechanism, identify:

a. the rate-limiting step

b. any intermediates

c. any catalysts

Solutions

Expert Solution

       Mechanism 1                                                     

                           NO + Cl2 --> NOCl + Cl      SLow step    slow step is rate determining step                          

                         NO + Cl --> NOCl          fast step

             --------------------------------------------------------------------------------

                                      2 NO(g) + Cl2(g) --> 2 NOCl (g)    over all reaction

NO + Cl2 --> NOCl + Cl      SLow step    slow step is rate determining step    of rate limiting step

b. any intermediates   . Cl is intermediate

c. no catalyst

queen_honey_blossom answered 10 months ago
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