Question
For the non- stoichiometric reaction 2A + B → C + D, the following kinetic data were obtained in three separate experiment, all at 298 K.
| Initial concentration (A) | Initial concnetration (B) | Initial rate of formation of C (mol L-1 S-1) | |
| 1 | 0.1 M | 0.1 M | 1.2 x 10-3 |
| 2 | 0.1 M | 0.2 M | 1.2 x 10-3 |
| 3 | 0.2 M | 0.1 M | 2.4 x 10-3 |
Solution
D.
where x = order of reaction w.r.t A
y = order of reaction w.r.t B
1.2 x 10-3 = k (0.1)x (0.1)y
1.2 x 10-3 = k (0.1)x (0.2)y
2.4 x 10-3 = k(0.2)x (0.1)y
R = k [A]1[B]0
As shown above, rate of reaction remains constant as the concentration of reactant (B) changes from 0.1 M to 0.2 M and becomes double when concentration of A change from 0.1 to 0.2
1.2 x 10-3 = k (0.1)x (0.2)y
2.4 x 10-3 = k(0.2)x (0.1)y
R = k [A]1[B]0
As shown above, rate of reaction remains constant as the concentration of reactant (B) changes from 0.1 M to 0.2 M and becomes double when concentration of A change from 0.1 to 0.2
