1.

For the reaction2NO_2+F_2rarr2NO_2F , following mechanism has been provided: NO_2+F_2overset(slow)rarrNO_2F+F NO_2+Foverset(FAST)rarrNO_2F Thus rate expression of the above reaction can be written as:

Answer»

`r=k[NO_2]^2[F_2]`
`r=k[NO_2][F_2]`
`r=k[NO_2]`
`r=k[F_2]`

ANSWER :B


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