Using MNO2 as catalyst in this: 2KClO3(g) → 2KCl(s) + 3O2(g). The importance of the catalyst in the reaction above is that?

A. heating may not be required before the reaction takes place
B. the reaction is controllable even at a high temperature
C. the reaction produces large quantity of oxygen
D. the reaction takes place more rapidly at a lower temperature

Correct Answer:

Option D – the reaction takes place more rapidly at a lower temperature

Explanation

A catalyst is a substance that enables a chemical reaction to proceed at a usually faster rate or under different conditions (as at a lower temperature) than otherwise possible.