Q.

The following mechanism has been proposed for the reaction of NO with Br2 to form NOBr

NO(g)+Br2(g)NOBr2(g),NOBr2(g)+NO(g)2NOBr(g)

If the second step is the rate determining step, the order of the reaction with respect to NO (g) is

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a

2

b

1

c

0

d

3

answer is D.

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Detailed Solution

NO+Br2NOBr2

Keq=NOBr2NOBr2NOBr2=KeqNOBr2.......(1)

NOBr2+NO2NOBr2

 R=KNOBr2NO=Keq.KNO2Br2=K1NO2Br2

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The following mechanism has been proposed for the reaction of NO with Br2 to form NOBrNO(g)+Br2(g)→NOBr2(g),NOBr2(g)+NO(g)→2NOBr(g)If the second step is the rate determining step, the order of the reaction with respect to NO (g) is