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In the reaction A rarr Products, when st...

In the 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 :

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The correct Answer is:
2
`((t_(1//2))_(1))/((t_(1//2))_(2)) = ((a_(2))/(a_(1)))^(n-1), (120)/(240) = ((4 xx 10^(-2))/(8 xx 10^(-2)))^(n-1), n = 2`
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