The cis-trans isomerisation of 1,2-dimethyl cyclopropane at 453 C is a reversible first order reaction.

The cis-trans isomerisation of 1,2-dimethyl cyclopropane at 453 °C is a reversible first order reaction. The percentage composition of the mixture is shown as a function of time, in the following table:

• Time/s

1. 0
2. 45
3. 90
4. 225
5. 270
6. 360
7. 495
8. 585
9. 675
10. ∞

• Trans-isomer/%

1. 0
2. 10.8
3. 18.9
4. 37.7
5. 41.8
6. 49.3
7. 56.5
8. 60.1
9. 62.7
10. 70.0

Calculate the equilibrium constant and the rate constants for the forward and reverse processes (with theory please).