Question

what are positive catalyst and negative catalyst? support your answer with one example for each of them.​

Answer 1

Answer:

(i) Positive catalyst: When a catalyst increases the rate of chemical reaction, it is called a positive catalyst.

when potassium chlorate heated to 700

∘

C decomposes to evolve oxygen gas. when MnO: is added the decomposition takes place at 300

∘

C.

(ii) Negative catalyst: When a catalyst decreases the rate of chemical reaction it is called a negative catalyst.Example. Phosphoric acid acts as a negative catalyst to decrease the rate of the decomposition of hydrogen peroxide. Alcohol too acts as a negative catalyst In certain chemical reactions.

solution

Explanation:

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