InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
For a first-order reaction `A rarr B` the reaction rate at reactant concentration of `0.10 M` is found to be `2.0 xx 10^(-5) "mol" L^(-1) s^(-1)`. The half-life period of the reaction isA. 30 sB. 220sC. 300sD. 347 s |
|
Answer» Correct Answer - D d) `A to B` rate of reaction = `2 xx 10^(-5) mol L^(-1)s^(-1)` Order of reaction (n) =1 rate = `k[A]^(n) = k[A]` `k=("rate")/[A]=(2 xx 10^(-5) mol L^(-1)s^(-1))/(0.01 mol L^(-1)) = 2 xx 10^(3) s^(-1)` `t_(1//2) = 0.693/k = 0.693/(2 xx 10^(-2)s^(-1)) = 347s` |
|