AP Kinetics Test Review

Front

What is the order of a reaction if the rate constant is k1 = 10.7 s^-1?

Back

The reaction is first order.

Front

What is the half-life formula for a first order reaction?

Back

t1/2 = 0.693/k, where k is the rate constant.

Front

How do you determine the rate exponent for a reactant A?

Back

By comparing the initial rates of trials where the concentration of A changes.

Front

What is the relationship between organic reaction rates and covalent bonds?

Back

Organic reactions are generally slower because they involve covalent bonds.

Front

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

Back

The rate of reaction is proportional to the square of the concentration of one reactant or the product of the concentrations of two reactants.

Front

What is the significance of the rate constant in reaction kinetics?

Back

The rate constant (k) indicates the speed of the reaction; higher values mean faster reactions.

Front

What is the unit of the rate constant for a first order reaction?

Back

The unit is s^-1.

Front

What is the effect of temperature on reaction rates?

Back

Generally, increasing temperature increases reaction rates due to higher kinetic energy.

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, the rate depends on the concentration of one reactant.

Front

How can you identify a first order reaction from a rate constant?

Back

If the unit of the rate constant is s^-1, the reaction is first order.