AP Chem Unit 5

Front

What is the overall chemical equation for the reaction of H2 and ICl?

Back

H2 + 2 ICl → 2 HCl + I2

Front

What is the rate law for the elementary step 2 of the reaction involving HI and ICl?

Back

rate = k[HI][ICl]

Front

What effect does adding a heterogeneous catalyst have on a chemical reaction?

Back

It increases the rate of the reaction without being consumed.

Front

If the rate law for a reaction is rate = k[NO2]^2[Cl2], what happens to the rate if both [NO2] and [Cl2] are doubled?

Back

The rate increases by a factor of 8.

Front

What does a second-order reaction in X imply about the concentration of X?

Back

The rate of reaction is proportional to the square of the concentration of X.

Front

What is the effect of increasing [H+] on the frequency of collisions in a reaction?

Back

The frequency of collisions between H+ ions and other reactants will increase.

Front

Define the term 'rate constant' (k) in a chemical reaction.

Back

The rate constant is a proportionality factor that relates the rate of a reaction to the concentrations of the reactants.

Front

What is the relationship between temperature and reaction rate?

Back

Generally, increasing the temperature increases the reaction rate.

Front

What is an elementary step in a chemical reaction?

Back

An elementary step is a single step in a reaction mechanism that describes a single molecular event.

Front

How does the concentration of reactants affect the rate of a reaction?

Back

Increasing the concentration of reactants typically increases the rate of reaction.