Rate of reaction; A + B Products; is given below as a function of different initial concentrations of A and B
 
[A] mol litre-1 [B] mol litre-1 Initial rate mol litre-1 time-1
0.01 0.01 0.005
0.02 0.01 0.010
0.01 0.02 0.005

​The half life of A in the reaction is:
(A) 1.386 min
(B) 1.386 min
(C) 0.01 min
(D) 0.01 min

The solution is as follows:

1. The reaction is first order with respect to A.

2. The half life is:

       t12=ln 2k=0.6930.005=1.386 min

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