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The following homogeneous gaseous reacti...

The following homogeneous gaseous reactions were experimentally found to be second order overall.
1. `2NO rarr N_(2)+O_(2)`
2. `3O_(2) rarrr 2O_(3)`
3. `N_(2)O_(3) rarr NO+NO_(2)`
4. `H_(2)+I_(2) rarr 2HI`
Which of these are most likely to be elementary reactions that occur in one step ?

A

3 only

B

1 and 3

C

1 and 4

D

3 and 4

Text Solution

Verified by Experts

The correct Answer is:
C
`2NO rarr N_(2)+O_(2)`
`" rate"=k[NO]^(2)`
Hence, order of reaction is 2.
`" "H_(2)+I_(2)=2HI`
`" rate"=k[H_(2)][I_(2)]`
Hence, order of reaction is (1 + 1) = 2
Therefore, these reaction are most likely to be elementary reaction that occur in one step.
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