Consider two reactions, one that is first order and one that is second order. Which best describes the effect on the reaction rates by INCREASING the concentration of all reactants?
Question
Consider two reactions, one that is first order and one that is second order. Which best describes the effect on the reaction rates by INCREASING the concentration of all reactants?
Solution
For a first-order reaction, the rate of the reaction is directly proportional to the concentration of one reactant. This means that if you double the concentration of the reactant, the rate of the reaction will also double.
For a second-order reaction, the rate of the reaction is proportional to the square of the concentration of one reactant or the product of the concentrations of two reactants. This means that if you double the concentration of the reactant, the rate of the reaction will increase by a factor of four (2^2).
Therefore, increasing the concentration of all reactants will have a greater effect on the rate of a second-order reaction compared to a first-order reaction.
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