AP Kinetics Review

Front

What does it mean if a reactant has zeroth order?

Back

There is no effect of the concentration change on the reaction rate.

Front

If you quadruple the concentration and the rate quadruples, what order is this reaction?

Back

First order.

Front

Why are most reactions more rapid at high temperatures?

Back

This is consistent with an increase in the rate constant and an increase in the percent of 'high energy' collisions with increasing temperature.

Front

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

Back

1/k[A]₀.

Front

True or False: The particles under the purple curve have an average Kinetic Energy that is proportional to 500K.

Back

True.

Front

What is the relationship between concentration and reaction rate for a first order reaction?

Back

The reaction rate is directly proportional to the concentration of the reactant.

Front

Define activation energy.

Back

The minimum energy required for a chemical reaction to occur.

Front

What effect does increasing temperature have on the rate constant (k)?

Back

Increasing temperature generally increases the rate constant (k).

Front

What is the significance of the Arrhenius equation?

Back

It relates the rate constant of a reaction to temperature and activation energy.

Front

What is the effect of a catalyst on a reaction?

Back

A catalyst lowers the activation energy, increasing the reaction rate.