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For a hypothetical reaction ArarrB, it i...

For a hypothetical reaction `ArarrB`, it is found that the rate constant `= x s^(-1)`. By what factor the rate is increased if the initial concentration of `A` is tripled?

A

`1`

B

`2`

C

`3`

D

`4`

Text Solution

Verified by Experts

The correct Answer is:
C
Rate `= k[A]^(n)`
Rate constant `= k= x s^(-1)`
Units of `k =s^(-1)`
Units of `k` show that it is a first order reaction.
`:. r_(1) = k[A]^(1)`
`r_(2) = k[3A]`
`(r_(2))/(r_(1)) = 3 rArr 3r_(1)`
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