Which of the following types of catalyst is glycerol in the given reaction?

$2 H_{2} O_{2} Glycerol \to 2 H_{2} O + O_{2}$

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Positive catalyst

Negative catalyst

Biocatalyst

Autocatalyst

answer is B.

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Detailed Solution

Glycerol is a negative catalyst in the given reaction.

2 H_{2} O_{2} Glycerol \to 2 H_{2} O + O_{2}

A substance that doesn’t undergo any internal chemical change but increases the rate of the chemical reaction is known as a catalyst.
A catalyst is said to be a positive catalyst if it increases the rate of the reaction and a negative catalyst is a catalyst which decreases the rate of the reaction. It is clear that glycerol is responsible for decreasing the reaction rate; hence glycerol in the above reaction is a negative catalyst.

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