Question

define a catalyst how does it help when you heat potassium chlorate which catalyst is used in this reaction

Answer 1

⭐⭐⭐⭐⭐ ANSWER ⭐⭐⭐⭐⭐

❤ WHAT IS A CATALYST? ❤

➡ Catalyst is a chemical substance which is used in a chemical reaction which is used to accelerate or decelerate the rate at which the reaction occur without being used up.

❤ INVOLVEMENT OF POTASSIUM CHLORATE (KClO3) ❤

➡ Potassium Chlorate decpmposes only at 700°C and even then the rate of release of oxygen is very slow. But when potassium chlorate is heated in the presence of MANGANESE DIOXIDE, decomposition begins at a much lower temperature, 300°C, and manganese dioxide remains unaffected. Thus, in this reaction, manganese dioxide acts as a catalyst.

❤ REACTION ❤

➡ 2KClO3 -----MnO2-----> 2KCl + 3O2

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❤ HOPE EVERYTHING IS CLEAR TO YOU NOW.

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⭐⭐⭐ ALWAYS BE BRAINLY ⭐⭐⭐

Answer 2

Answer:

The substance in whose presence the rate of the chemical reaction changes without causing any chemical change is called a catalyst

Explanation:

2KClO3=2KCl+3O2

in this reaction potassium chlorate decomposes slowly

here the heat provided acts as a catalyst