Question

How do you find the rate constant here?

trials	[I]	[H2O2]	[H]	temp (C)	Rate (M/s)
1	8.53*10^-3	1.03*10^-1	0.333	21.5	5.33*10^-4
2	8.53*10^-3	1.03*10^-1	0.333	15	4.3*10^-4
3	8.53*10^-3	1.03*10^-1	0.333	42	2.17*10^-3

Answer 1

In chemical kinetics a reaction rate constant, k or , quantifies the rate of a chemical reaction.^[1]

For a reaction between reactants A and B to form product C

the reaction rate is often found to have the form:

Here k(T) is the reaction rate constant that depends on temperature. [A] and [B] are the concentrations of substance A in moles per volume of solution assuming the reaction is taking place throughout the volume of the solution. (For a reaction taking place at a boundary one would use instead moles of A or B per unit area).

trials	[I]	[H2O2]	[H]	temp (C)	Rate (M/s)
1	8.53*10^-3	1.03*10^-1	0.333	21.5	5.33*10^-4
2	8.53*10^-3	1.03*10^-1	0.333	15	4.3*10^-4
3	8.53*10^-3	1.03*10^-1	0.333	42	2.17*10^-3

1.            T is in K

on solving we get k= 6.827*10^-3 L²M^-1s^-1

2.

on puttin values and solving

k = 6.981*10^-3 L²M^-1s^-1

3.

on puttin values and solving

k = 6.383*10^-3 L²M^-1s^-1