At `518^(@)`C, the rate of decomposition of a simple of gaseous acetaldehyde initially at a pressure of `363 to "rr"` was `1 to "rr" s^(-1)` when `5%`
At `518^(@)`C, the rate of decomposition of a simple of gaseous acetaldehyde initially at a pressure of `363 to "rr"` was `1 to "rr" s^(-1)` when `5%` had reacted and `0.5 to "rr" s^(-1)` when `33%` had reached. The order of reaction is:
A. 2
B. 3
C. 1
D. 0
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Correct Answer - B
b) Assume that the order of reaction with respect to gaseous acetaldehyde is x.
Ist case
Reaction rate (r ) = `k[363 " torr " xx 0.95]^(x)`
`k[344.85]^(x)`………..(i)
IInd case:
`0.5" torr "s^(-1) = k[363 " torr " xx 0.67]^(x)`
`=k[243.21]^(x)`............(ii)
Divide i) by ii),
`(1 " torr " s^(-1))/(0.5 " torr "s^(-1))= [344.85]/[243.21]`
or `(2)^(1) = (1.414)^(x)`
or `x=2`
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