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A first order reactions is 10% complete ...

A first order reactions is 10% complete in 20 min. The time taken for 19% completion is :

A

30 min

B

40 min

C

50 min

D

38 min

Text Solution

Verified by Experts

The correct Answer is:
B
10 % of the solution is completed in 20 min . Next 20% of the reaction will be completed in next 20 min. Hence , 10% +9% = 19% of the reaction will be completed in 20 + 20= 40 min.
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