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A first order reaction is carried out st...

A first order reaction is carried out starting with 10 mol `L^(-1)` of the reactant . It is 40% complete in 50 min . If the same reaction is carried out with an initial concentration of 5 mol `L^(-1)` the percentage of reaction that is completed in 50 min is

A

40%

B

80%

C

20%

D

36.8%

Text Solution

Verified by Experts

The correct Answer is:
A
(A) For a first order reaction time taken for a definite fraction to complete is independent of initial concentration .
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Knowledge Check

  • A first order reaction is 60% complete in 20 minutes . How long will the reaction take to be 84% complete ?

    A
    54 mins
    B
    68 mins
    C
    40 mins
    D
    76 mins

  • A first order reaction is 60% complete in 20 minutes .How long will the reaction take to be 84% complete ?

    A
    54 mins
    B
    68 mins
    C
    40 mins
    D
    76 mins

  • 50% of a first order reaction is completed in 30 min. the value velocity constant of the reaction is

    A
    `0 cdot 231`
    B
    `2 cdot 31`
    C
    `0 cdot 00231`
    D
    `0 cdot 0231`

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