Question

What experimental factors change the numerical value of k in the rate law for the reaction of h2o2 with I-?

Why is maintaining a constant temperature during and between each and every part of this experiment critical to the calculation of a valid rate law?

Answer 1

Solution :-

1)The experimental factor that changes the rate constant K is the temperature because the rate constant K is dependent on the temperature for the exothermic reaction increasing the temperatures causes rate constant to decrease and in endothermic reaction increasing the temperature causes the rate constant to increase.

2) since the rate constant is dependent on the temperature therefore to find the valid rate law we need to keep the temperature constant because if the temperature of the reaction is changed then it gives the variuos rates for the reaction in each trial this would give the incorrect rate law, therefore it is important to keep the temperature constant during the reaction.