The time taken for 10% completion of a first order reactin i... | Chemistry | SolveeIt | Solveeit

Today, August 19

Question

The time taken for 10% completion of a first order reactin is 20 mins. Then, for 19% completion, the reaction will take

A

(A) 40 min

B

(B) 60 min

C

(C) 30 min

D

(D) 50 min

Answer

(A) 40 min

Explanation

Solution

Explanation:
t=2.303λlog⁡N0N20=2.303λlog⁡10090t=2.303λlog⁡10081equation (i) / (ii) ∴t=40min