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9 October, 19:17

When small pieces of manganese oxide were added to a solution of hydrogen peroxide, water and oxygen were produced. Manganese oxide was not used up in the reaction. Which of the following is likely to increase the rate of the reaction?

Reducing the number of pieces of manganese oxide used

Increasing the amount of solution

Using one cube of equal mass of manganese oxide

Chilling the hydrogen peroxide solution

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  1. 9 October, 19:35
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    Answer: In the given reaction increasing the amount of solution is likely to increase the rate of the reaction.

    Explanation:

    It is known that more is the number of reactant molecules taking part in a chemical reaction more will be the number of collisions occur. As a result, more will be the rate of chemical reaction.

    For example, When hydrogen peroxide dissociates into water and oxygen on addition of manganese oxide then increasing the number of reactants (hydrogen peroxide and manganese oxide) will also lead in the increase in rate of reaction.

    Thus, we can conclude that in the given reaction increasing the amount of solution is likely to increase the rate of the reaction.
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