AP Chemistry - Unit 5 - Thou Shall Not Forget

Front

What is the order of a reaction if quadrupling the concentration results in a quadrupling of the rate?

Back

First order reaction.

Front

What does a taller 'hill' (activation energy) in a reaction profile indicate about the reaction speed?

Back

The reaction is slower.

Front

Which of the following is NOT a way to speed up a reaction: Add a catalyst, Decrease the volume, Increase the concentration of reactants, Increase surface area of the solid, Decrease the pressure?

Back

Decrease the pressure.

Front

What is the order of a reaction if the graph shows a quadratic relationship between concentration and time?

Back

Second order.

Front

What is the order of a reaction if the graph shows a linear relationship between concentration and time?

Back

First order.

Front

Define activation energy in the context of chemical reactions.

Back

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

Front

What effect does increasing the concentration of reactants have on the rate of a reaction?

Back

It generally increases the rate of the reaction.

Front

What is a catalyst and how does it affect a chemical reaction?

Back

A catalyst is a substance that increases the rate of a reaction without being consumed, by lowering the activation energy.

Front

Explain the difference between zero-order and first-order reactions.

Back

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

Front

What is the relationship between surface area and reaction rate?

Back

Increasing the surface area of a solid reactant increases the reaction rate.