1.

For the reaction `AtoB`, the rate of reaction becomes three times when the concentration of A is increased by nine times. What is the order of reaction ?

Answer» `A to B`
Rate (R) `=K[A]^(alpha)`
New Rate law
`3R=K[9A]^(alpha)`
From (1) and (2)
`(1)/(3)=(1/9)^(alpha)rArr(1)/(2)=(1/3)^(2alpha)`
`rArr1=2alpharArralpha=(1)/(2)`


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