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In a first order reaction, 20% reaction ...

In a first order reaction, 20% reaction is completed in 24 minutes.The percentage of reactat remaining after 48 minutes is

A

`60`

B

`64`

C

`81`

D

`80`

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-CHEMICAL KINETICS-Objective Exercise - 2
  1. For first order reaction t(0.75) is 138.6 sec. Its specific rate const...

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  2. 20% first order reaction is completed in 50 minute. Time required for ...

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  3. In a first order reaction, 20% reaction is completed in 24 minutes.The...

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  4. A first order reaction is half completed is 45 minutes. How long does ...

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  5. For a first order reaction AtoB the reaction rate at reactant concetra...

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  6. 99% of a first order reaction was completed in 32 in. When wil 99.9% o...

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  7. For a first order reaction with half life of 150 seconds, the time tak...

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  8. A reaction which is of first order w.r.t reactant A has a rate constna...

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  9. A hypothetical reaction A2 + B2 to 2AB follows the mechanism as given...

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  10. Depletion of ozone occurs as : 2O3 to 3O2 Step 1: O3 overset(Kc...

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  11. For a first order process A to B , rate constant k1 = 0.693 "min"^(-...

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  12. For Products, the concentration of sucrose changes from 0.06 M to 0....

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  13. 99% of a 1st order reaction completed in 2.303 minutes. What is the ra...

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  14. The rate constant of a reaction at 200K is 10 times less than rate con...

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  15. Out og 300 g substance [decomposes as per 1st order], hou much will re...

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  16. 75% of a first order process is completed in 30 min. The time required...

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  17. For a first order reaction at 27^@C, the ratio of time required for 75...

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  18. The half life period of a first order chemical reaction is 6.93 minute...

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  19. In a first order reaction, the concentration of the reactant, decrease...

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  20. The chemical recation 2O(3) to 3O(2) proceeds as follows : O(3)overset...

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