AP Chem Kinetics Review

Front

What is half-life in the context of chemical kinetics?

Back

Half-life is the time required for the concentration of a reactant to decrease to half of its initial concentration.

Front

How do you calculate the time taken for a substance to decay from an initial amount to a final amount using half-life?

Back

Use the formula: Time = (n * half-life), where n is the number of half-lives.

Front

What is the rate law in chemical kinetics?

Back

The rate law expresses the relationship between the rate of a chemical reaction and the concentration of its reactants, typically in the form Rate = k[A]^n[B]^m.

Front

How are the exponents in a rate law determined?

Back

The exponents n and m are determined experimentally, not from the balanced chemical equation.

Front

What is the overall order of a reaction?

Back

The overall order of a reaction is the sum of the exponents in the rate law.

Front

If a rate law is Rate = k[A]^2[B]^1, what is the overall order?

Back

The overall order is 2 + 1 = 3.

Front

What is the significance of the rate constant (k) in a rate law?

Back

The rate constant (k) is a proportionality factor that is specific to a given reaction at a specific temperature.

Front

What does a zero-order reaction imply about the concentration of reactants?

Back

In a zero-order reaction, the rate of reaction is constant and does not depend on the concentration of the reactants.

Front

What is the relationship between the rate of production of products and the rate of consumption of reactants?

Back

The rate of production of products is related to the rate of consumption of reactants by stoichiometric coefficients.

Front

For the reaction 2A + B → 2C, if the rate of production of C is 12 M/s, what is the rate of reaction?

Back

The rate of reaction is 6 M/s.