When the concentration of a reactant has no effect on the rate.
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What is first order of reaction?
Rate depends on the concentration of the reactant raised to the power of one; any change in concentration gives the same change in rate.
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What is second order of reaction?
Rate of reaction depends the concentration of the reactant to the power of two; any changes concentration affects the rate by the square of the change.
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What is the rate determining step?
The slowest step in the reaction mechanism of a multi-step reaction.
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Can you form rate equations?
rate = k[A][B]; you need to be able to find k and all the units; you need to be able to find order of reaction from experimental data.
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What are the different shapes that orders make in concentration-time graphs and rate-concentration graphs?
See 5.1.1 sheet 1.
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What can be found from a concentration-time graph?
Zero order - gradient=k; first order - gradient = rate of reaction.
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What can be found from a rate-concentration graph?
Zero order - y-intercept = k; first order - gradient = k.
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How does a colorimeter work, and how does an iodine clock reaction work?
See 5.1.1 sheet 2.
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What does the rate-determining step show?
It only includes reacting species involved in the rds; the orders in the rate equation match the number of species involved in the rds; you should be able to make equations for reactions based on the rds.
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What happens if temperature increases?
As temperature increases, the rate increases and the value of the rate constant, k, will also increase.
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What is the Arrhenius equation?
See blue 5.1.1 flashcard 1; you must be able to manipulate the equation using ln, to give the form y=mx+c.
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Other cards in this set
Card 2
Front
What is zero order of reaction?
Back
When the concentration of a reactant has no effect on the rate.
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