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Multiple Choice
Which of the following factors could explain the curve in the reaction rate graph for an organic chemistry reaction?
A
The presence of a catalyst that remains constant
B
Temperature changes affecting reaction kinetics
C
The initial concentration of reactants remaining unchanged
D
The use of a solvent with a constant boiling point
Verified step by step guidance
1
Understand that reaction rate graphs typically show how the speed of a reaction changes over time or with varying conditions.
Recognize that temperature changes can affect reaction kinetics by altering the energy of the molecules involved, which can increase or decrease the rate of reaction.
Consider the Arrhenius equation, which describes how the rate constant (k) of a reaction is affected by temperature: , where is the activation energy, is the gas constant, and is the temperature.
Analyze how a change in temperature can lead to a curve in the reaction rate graph, as the rate constant changes with temperature, affecting the speed of the reaction.
Conclude that while catalysts, initial concentrations, and solvents can influence reaction rates, temperature changes are a key factor in explaining curves in reaction rate graphs due to their direct impact on molecular energy and reaction kinetics.