Question

Why law of mass action can not be applied in the thermal decomposition of potassium chlorate given as 2KClO3 TO 2KCl +3O2 ​ .

Answer 1

Because its a irreversible reaction. It takes place in forward direction only.

This is only valid for elementary reactions

Certain reactions, like this don't happen in a single magical step. They involve lots of reactive intermediates and transition states, so it's basically a bunch of several elementary reactions. You can't consider the whole reaction as an elementary reaction

Hpoe you understood..

Answer 2

Answer:

can be applied under lower temperatures

Explanation: