Why does decreasing the concentration of the reactants generally result in a lower reaction rate?Question 4Select one:a.There are more collisions between reactant molecules.b.The reactant molecules collide with greater energy.c.The reactant molecules collide with less energy.d.There are fewer collisions between reactant molecules.
Question
Why does decreasing the concentration of the reactants generally result in a lower reaction rate?Question 4Select one:a.There are more collisions between reactant molecules.b.The reactant molecules collide with greater energy.c.The reactant molecules collide with less energy.d.There are fewer collisions between reactant molecules.
Solution
The answer is d. There are fewer collisions between reactant molecules.
Here's why:
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The rate of a chemical reaction is determined by the frequency of collisions between reactant molecules. The more often they collide, the more opportunities they have to react and form products.
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The concentration of reactants in a solution is a measure of how many of them are present in a given volume. A higher concentration means more reactant molecules are present, and thus more collisions are likely to occur.
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When the concentration of reactants is decreased, there are fewer reactant molecules present in the same volume. This means they are less likely to collide with each other.
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Because there are fewer collisions, the reaction rate decreases. Therefore, decreasing the concentration of the reactants generally results in a lower reaction rate.
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