AP Chem Kinetics Review

Front

What is the order of reactant A in the rate law: Rate = k[A]^2[B]?

Back

The order of reactant A is 2.

Front

How are the exponents n and m in the rate law determined?

Back

The exponents n and m are determined by experiment.

Front

What type of reaction is characterized by the release of heat?

Back

An exothermic reaction.

Front

What effect does a catalyst have on the activation energy of a reaction?

Back

A catalyst lowers the activation energy of the reaction.

Front

Identify the rate constant for a first order overall reaction: k1 = 10.7 s^-1, k1 = 1.000 M s^-1, k1 = 5403.2 M^½ s^½, k1 = 1.23 x 10^-6 M^-1 s^-1.

Back

k1 = 10.7 s^-1 is a first order overall reaction.

Front

What is the definition of reaction rate?

Back

The reaction rate is the change in concentration of a reactant or product per unit time.

Front

What is the role of temperature in chemical kinetics?

Back

Increasing temperature generally increases the reaction rate by providing more energy to the reactants.

Front

What is activation energy?

Back

Activation energy is the minimum energy required for a reaction to occur.

Front

What is a rate law?

Back

A rate law expresses the relationship between the rate of a chemical reaction and the concentration of its reactants.

Front

What is the difference between zero order and first order reactions?

Back

In zero order reactions, the rate is constant and independent of reactant concentration; in first order reactions, the rate is directly proportional to the concentration of one reactant.