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In a reaction A rarr products , when st...

In a reaction `A rarr ` products , when start is made from `8.0 xx 10^(-2) M` of A, half life is found to be 120 minute. For the initial concentration `4.0 xx 10^(-2) M`, the half life of the reaction becomes 240 minute. The order of the reaction is `:`

A

zero

B

one

C

two

D

0.5

Text Solution

Verified by Experts

The correct Answer is:
C
`((t_(1//2))_(1))/((t_(1//2))_(2))=((a_(2))/(a_(1)))^(n-1) rArr (120)/(240) =((4xx10^(-2))/(8xx10^(-2)))^(n-1) rArr n=1=1 rArr n=2`
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