Consider the following first order competing reactions:
`X overset(k_(1)) to A + B` and `Y overset(k_(2)) to C + D`
If 50% of the reaction of X was completed when 96% of the reaction of Y was completed, the ratio of thoir rate constant (`k_2 // k_1`) is:

Options

A. 4.6
B. 4.06
C. 1.123
D. 2.303

Answer

A

Explanation

For 50% completion of p : t =`(0.693)/(k_(1)) i.e k_(1)=(0.693)/(t)`
dividing eq (ii) by eq (i) `(k_(2))/(k_(1))=4.6`