Question
The rate of constant of the reaction A → B is 0.6 x 10-3 mole per second. If the concentration of A is 5 M then concentration of B after 20 min is
-
1.08 M
-
3.60 M
-
0.36 M
-
0.72 M
Solution
D.
0.72 M
For a zero -order reaction unit of the rate constant is mole per second. Hence, we can easily calculate concentration of B after 20 min by the following formula,
x = Kt
x = Kt = 0.6 x 10-3 x 20 x 60 = 0.72 M
