Rate laws, reaction order, catalysts, and activation energy concepts tested on the MCAT.
35 cards · basic cards · AI-written, checked twice. Edit anything.
- What is reaction rate in chemical kinetics?
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The change in reactant or product concentration per unit time- What is the general form of a rate law for a reaction with reactants A and B?
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rate = k[A]^m[B]^n- What does the exponent on a reactant's concentration in a rate law represent?
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The reaction order with respect to that reactant- How is the overall order of a reaction determined from its rate law?
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It is the sum of all the individual reactant exponents (orders)- Can reaction order be determined from the balanced chemical equation alone?
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No, reaction order must be determined experimentally, not from stoichiometric coefficients- What is the rate law for a zero-order reaction?
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rate = k- What are the units of the rate constant k for a zero-order reaction?
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M/s (molarity per second)- What is the rate law for a first-order reaction?
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rate = k[A]- What are the units of the rate constant k for a first-order reaction?
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1/s (inverse seconds)- What is the rate law for a second-order reaction with a single reactant?
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rate = k[A]^2- What are the units of the rate constant k for a second-order reaction?
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1/(M*s) (inverse molarity times inverse seconds)- What is the integrated rate law for a zero-order reaction?
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[A] = [A]0 - kt- What is the integrated rate law for a first-order reaction?
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ln[A] = ln[A]0 - kt- What is the integrated rate law for a second-order reaction?
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1/[A] = 1/[A]0 + kt- What is the half-life formula for a zero-order reaction?
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t(1/2) = [A]0 / (2k)
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