Why Does the Rate of the Reaction Decrease Over Time

question 20

Multiple Choice

Why does the rate of the reaction decrease over time?

• A)Exothermic reactions lose heat which cools the reaction which decreases reaction rate.
• B)As the reaction proceeds,the concentration of the products results in fewer collisions.
• C)As the reaction proceeds,a decrease in the concentration of reactants results in fewer successful collisions.
• D)Not all molecules will react and some choose to stay in their present form.
• E)none of the above

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