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For a reaction, 3A rarr Products, it is ...

For a reaction, `3A rarr` Products, it is found that the rate of reaction becomes nine times if concentration of `A` is increased three times, calculate order of reaction.

Text Solution

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Rate= `K ["Reactant"]^(n)`
If [Reactant]=a, Rate=`r_(1)`
`:. R_(1) = K[a]^(n)`
If [Reactant]`=3a`, Rate=`9r_(1)`
`9r_(1)=K[3a]^(n)`
`:. 1/9=[1/3]^(n)`
`n=2`
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