The rate of a chemical reaction decreases as the reaction proceeds. This is because

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The rate of a chemical reaction decreases as the reaction proceeds. This is because

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The reactant concentration remains constant as the reaction proceeds.

The product concentration remains constant as the reaction proceeds.

Concentration of reactant decreases from time to time, as the reaction progresses

Concentration of product decreases from time to time, as the reaction progresses

answer is C.

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Detailed Solution

The rate of reaction decreases as the reaction proceeds because the concentration of reactants is high at the start and with time, this concentration decreases and the reaction gets slower. So, the rate of reaction is dependent on concentration and hence, decreases with the passage of time.

Therefore, the correct option is (C).

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