Chemistry

(c) The data below refers to the reaction between the reactants X and Y

Experiment number

[X] moldm^ - beta

[Y] moldm^ -3

Initial rate/ - 3g + 1

1

0.25

0.25

1 * 10 ^ - 3

2

0.5

0.25

3

0.5

0.5

If the reaction is second order with respect to X and first order with respect to Y.

(1) Determine the initial rate of the reaction for experiments 2 and 3.

(ii) Calculate the rate constant for the reaction.

Reply 1

BankaiGintoki

Original post by Etoendeng

(c) The data below refers to the reaction between the reactants X and Y
Experiment number
[X] moldm^ - beta
[Y] moldm^ -3
Initial rate/ - 3g + 1
1
0.25
0.25
1 * 10 ^ - 3
2
0.5
0.25
3
0.5
0.5
If the reaction is second order with respect to X and first order with respect to Y.
(1) Determine the initial rate of the reaction for experiments 2 and 3.
(ii) Calculate the rate constant for the reaction.

From experiment 1 to 2:
X doubled, Y remained same, as X is second order, rate is 4 times of experiment 1, 4*10^-3.
From experiment 2 to 3:
Y doubled, X is same, Y is first order, rate is 2 times of experiment 2, 8*10^-3.

For (ii) substitute an experiment value, and rearrange for units.