Which of the following would cause a decrease in the rate of a chemical reaction? Which of the following would cause a decrease in the rate of a chemical reaction? An increase in the concentration of the reactants. An increase in temperature. An increase in the particle size. The addition of a catalyst
Question
Which of the following would cause a decrease in the rate of a chemical reaction?
Which of the following would cause a decrease in the rate of a chemical reaction?
An increase in the concentration of the reactants.
An increase in temperature.
An increase in the particle size.
The addition of a catalyst
Solution
An increase in the particle size would cause a decrease in the rate of a chemical reaction.
Here's why:
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Chemical reactions occur when particles collide with each other with sufficient energy. The rate of a chemical reaction is directly related to the frequency of these collisions.
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When the particle size is increased, the surface area available for collisions decreases. This means that there are fewer opportunities for the particles to collide, which leads to a decrease in the rate of the reaction.
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On the other hand, an increase in the concentration of the reactants or an increase in temperature would increase the rate of a chemical reaction. This is because both of these factors increase the frequency of collisions between particles.
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The addition of a catalyst also increases the rate of a chemical reaction. Catalysts work by providing an alternative reaction pathway with a lower activation energy, which allows more collisions to result in a reaction.
Similar Questions
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