AP Chemistry Unit 5 Review

Front

What does a Maxwell-Boltzmann curve represent?

Back

A Maxwell-Boltzmann curve represents the distribution of speeds of particles in a gas at a given temperature.

Front

What is the significance of the peak in a Maxwell-Boltzmann curve?

Back

The peak indicates the most probable speed of particles in the gas.

Front

What is the order of a reaction if the concentration of reactants affects the rate linearly?

Back

First order.

Front

What is a multi-step reaction?

Back

A multi-step reaction involves a series of elementary steps where the product of one step becomes a reactant in the next.

Front

What is an intermediate in a reaction mechanism?

Back

An intermediate is a species that is formed in one step of a reaction and consumed in a subsequent step.

Front

How do you determine the rate law for a reaction?

Back

The rate law is determined by the slowest elementary step in the reaction mechanism.

Front

What is the half-life of a first-order reaction?

Back

The half-life of a first-order reaction is constant and does not depend on the initial concentration.

Front

What is the rate law for the reaction A + 2B → D + C if the slow step is the first step?

Back

rate = k[A][B]^2.

Front

What does it mean if a reaction is zero order?

Back

In a zero-order reaction, the rate is constant and independent of the concentration of reactants.

Front

What is the relationship between reaction order and half-life in zero-order reactions?

Back

In zero-order reactions, the half-life is directly proportional to the initial concentration.