Question

What is the role of mno2 in the preparation of o2 gas from kclo3?

Answer 1

The role of MnO2 in the preparation of O2 is that of a catalyst. It does not take part in the reaction. O2 is prepared in the laboratory by heating KClO3 which requires to be heated up to a temperature of 630degree Celsius. It is dangerous too. But MnO2 acts as a positive catalyst which enables the reaction to take place at 200-240 degree at a much faster rate.

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Answer 2

Answer:

The role of MnO2 is the main source in the formation of O2. It does not participate in the reaction.

Explanation:

O2 is prepared in the laboratory by heating KClO3 which needs to be heated to a temperature of 630 °C. It is very harmful and also dangerous. But MnO2 also acts as a positive catalyst which allows the reaction to occur at a much faster rate at 200-240 degrees.

• Decomposition reaction is described as a chemical reaction in which a chemical substance breaks down into two or more chemical compounds when heated. It's thought to be the polar opposite of a combo reaction.
• Potassium chlorate (KClO3) decomposes into potassium chloride and oxygen gas when heated in the presence of manganese dioxide catalysts.
• We get a balanced equation for the reaction is - 2KClO3−→△2KCl+3O2
• When MnO2 (Manganese dioxide) is present, the decomposition of potassium chlorate is accelerated. It enables for lower-temperature breakdown.