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At 300 K, half life of gaseous reactant...

At 300 K, half life of gaseous reactant initially at 58 K pa is 320 min. When the pressure is 29kpa, the half life is 160 min. The order of the reaction is

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`t_(1/2)underset("min")(to)" "320" "160`
`P_(0)to" "58" "29`
`((t_(1/2))_(1))/((t_(1/2))_(2))=((P_(2))/(P_(1)))^((n-1)),(320/160)=(29/58)^(n-1),2^(1)=2^((1-n)),1=1-n,n=1-1,n=0`
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