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For the decompoistion of HI at 1000 K(2H...

For the decompoistion of `HI` at `1000 K(2HI rarr H_(2)+I_(2))`, following data were obtained:
`|{:([HI] (M),"Rate of decomposition of HI" (mol L^(-1) s^(-1))),(0.1,2.75 xx 10^(-8)),(0.2,11 xx 10^(-8)),(0.3,24.75 xx 10^(-8)):}|`
The order of reaction is

A

`1`

B

`2`

C

`0`

D

`1.5`

Text Solution

Verified by Experts

The correct Answer is:
B
Rate `= k[HI]^(n)`
`11 xx 10^(-8) = k[0.2]^(n)` …(i)
`2.75 xx 10^(-8) = k[0.1]^(n)` …(ii)
Dividing eq. (i) eq. (ii), we get
`4 = 2n, n = 2`.
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