Question

Calculate Ea for the uncatalyzed reactions. Use equation 9 and two uncatalyzed reactions that are identical in every aspect except for temperature.

Eq. 9: ln k2/k1 = (Ea/R)(1/T1 - 1/T2)

Reaction	[H2O2]M	[I-]M	Δ[I2]	Reaction Time, Δt (s)	Reaction Temp. (K)	RATE = Δ[I2]/Δt (M/s)	Apparent rate, constant, k'	ln k'	1/T
1	0.008	0.015	1.25E-04	126	295.15	9.92E-07	8.27E-03	-4.79546	0.003388
2	0.012	0.015	1.25E-04	136	295.15	9.19E-07	5.11E-03	-5.2773	0.003388

Answer 1

The temperatures are the same ( T1 and T2 ) therefore Ea for the uncatalyzed reactions can not be calculated.

If there was an error writing data Please leave a comment and I'll help you gladly.

With the temperature of 293.15K you commented: