For a reaction: 3A→ products
It is found that the rate of reaction doubles when the concentration of A is increased by eight times. What is the order of the reaction?
A
4
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B
14
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C
3
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D
13
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Solution
The correct option is D13 Rate = k[Reactant]n
Here: r1=k[A]n.......(1) r2=2r1=k[8A]n.......(2)
where r1 is the rate of the reaction
Now dividing equation (2) by equation (1), we get, 2=[8]n ⇒n=13