1.

The half-life periof for catalystic decompoistion of `AB_(3)` at `50 mm` is found to be `4` hr and at `100 mm` it is `2.0 hr`. The order of reaction isA. `3`B. `1`C. `2`D. `0`

Answer» Correct Answer - C
When initial pressure of `AB_(3) = 100 mm`
`t_(1//2) = 2 hr`.
It means when concentration is doubled, half life is halved. So, it is a second order reaction.
For second order reaction: `t_(1//2) prop (a)^(-1)`Correct Answer - C
When initial pressure of `AB_(3) = 100 mm`
`t_(1//2) = 2 hr`.
It means when concentration is doubled, half life is halved. So, it is a second order reaction.
For second order reaction: `t_(1//2) prop (a)^(-1)`


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