In the decomposition of potassium chlorate (2KClO₃ → 2KCl + 3O₂), mang…

Question

In the decomposition of potassium chlorate (2KClO₃ → 2KCl + 3O₂), manganese dioxide is added. It acts as a:

Accepted Answer

B. {'text': 'Positive catalyst'}

1. MnO₂ is not consumed during the reaction, so it is not a reactant.
2. It significantly **increases the rate** of decomposition at lower temperature.
3. Catalysts that speed up a reaction are called **positive catalysts**.
4. A negative catalyst would slow the reaction down.
_Source: Selina Concise ICSE Class 8 Chemistry Ch 6 "Chemical Reactions", Catalysts classification_

Answer

{'text': 'Reactant'}

Answer

{'text': 'Negative catalyst'}

Answer

{'text': 'Product'}