Review 15

REVIEW QUESTIONS

Chapter 15

A mixture of 0.10 mol of of and 0.10 mol of is placed in a flask and allowed to reach equilibrium as shown below:

At equilibrium

. Calculate the equilibrium constant,

, for this reaction.
2. At

for the reaction shown below:

Calculate

and

for the reaction shown below:

At for the following reaction:

In an equilibrium mixture,

and

. What is the concentration of

in the equilibrium mixture?
4. At

for the equilibrium:

If the partial pressures of NOBr and NO are equal at equilibrium, what is the partial pressure of

?
5. A mixture of

and

are place in a 1.00-L flask and allowed to come to equilibrium as shown below. At equilibrium

a) What are the equilibrium concentrations of

and

?
b) Calculate

and

for this reaction at

.
6. When 2.00 mol each of hydrogen and iodine are mixed in a

flask, 3.50 mol of HI is produced at equilibrium:

Calculate the equilibrium constant

for this reaction.
7. The equilibrium constant for the reaction

has a numerical value of 3.00 at a given temperature. 1.50 mol each of

and

are mixed in a

flask and allowed to reach equilibrium. What percent of

is converted to product?
8. The following equilibrium exists at

with

If a

mixture contains

and 0.074 mol of

, in which direction will the mixture proceed to reach equilibrium?
9. A

sample of

is placed in a

flask and heated to 1100 K . The

decomposes to

and

, as shown below. At equilibrium, the total pressure in the container is 1.300 atm . Find the values of

and

for this reaction at 1100 K .

Predict how each of the following changes affect the amount of present in an equilibrium mixture in the reaction

a) Raising the temperature of the mixture.
b) Adding more

.
c) Doubling the volume of the container holding the mixture.
d) Adding a catalyst.
11. At

the equilibrium constant for the reaction below is

. If the initial concentration of NO is 0.500 M , what are the equilibrium concentrations of each substance?

The reaction below has an equilibrium constant . If 0.100 mol of BrCl is placed in a flask and allowed to come to equilibrium, what are the equilibrium concentrations of each substance?

An equilibrium mixture of , and HI at contains and 0.155 M HI in a flask. What are the equilibrium concentrations when equilibrium is reestablished following the addition of 0.100 mol of HI ?