Chemistry, asked by bht09, 27 days ago

Manganese dioxide is used in the decomposition of potassium chlorate to evolve oxygen.In this reaction manganese dioxide act as a
a)Promoter b)Catalyst c)Product ​

Answers

Answered by Isabella9910
1

Answer:

When potassium chlorate (KClO3) is heated in the presence of manganese dioxide catalyst, it decomposes to form potassium chloride and oxygen gas. 

The balanced chemical equation is

2KClO3→Δ2KCl+3O2

Answered by dhruvithakker98
0

The correct answer is Option b: Catalyst

  • Manganese dioxide acts as a catalyst by lowering the activation energy of reactants in the formation of the product.
  • It will shorten the reaction time and speed up the synthesis of potassium chloride when compared to a reaction that does not use a catalyst.
  • The process will still need to be heated, but it will do so at a reduced temperature than before due to the influence of manganese dioxide.
  • The reaction can be shown as:

        2KClO₃  → Δ + MnO₂(catalyst) →  2KCl + 3O₂ (Rate of reaction increases)

  • Hence, Manganese dioxide acts as a catalyst in the chemical reaction.

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