Question

which of the following are key experimental variables that are systematically changed to determine the rate law?
select one or more:

the initial concentration of ki.
the size of the erlenmeyer flask.
the initial concentration of h₂o₂.
the speed of the magnetic stirrer.

Explanation:

In chemical kinetics experiments to determine the rate law, the concentrations of reactants (such as the initial concentration of \(H_2O_2\) and \(KI\)) are systematically changed. The size of the Erlenmeyer flask is a container - related factor that doesn't affect the reaction rate (as long as it can hold the reaction mixture). The speed of the magnetic stirrer affects mixing but is usually kept constant (or its effect is considered as a non - variable in the context of rate law determination based on reactant concentrations).

Answer:

The initial concentration of \(H_2O_2\), The initial concentration of \(KI\)