1.

In a reaction if the concentration of reactant A is tripled,the rate of reaction becomes twenty seven times.What is the order of the reaction?

Answer»

Solution :Reaction ORDER=3
For any reaction `RtoP` and order =n so rate
`r_(1)k[R]^(n)`
If the concentration becomes 3 times i.e. 3R then rate ,`r_(2)k[]3R^(n)`
So ,`(r_(2))/(r_(1))=(k[3R]^(n))/(k[R]^(n))=(27)/(1)`
`THEREFORE (""^(27)r_(1))/(r_(1))=27`
`therefore 27=3^(n)`
`therefore 3=3^(n)`
So, n=3


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