Chapter 18 Equilibrium

Question 0

Type of equilibrium that has everything present in the same phase

Answer 0

Homogenous equilibrium

Question 1

A point in a reaction in which the rate of the forward reaction is the same as the rate of the reverse reaction

Answer 1

Equilibrium

Question 2

Type of reaction that has substances present in more than one phase

Answer 2

Heterogenous equilibrium

Question 3

What three factors can affect an equilibrium reaction

Answer 3

Temperature
Pressure
Concentration

Question 4

What is indicated if the enthalpy change for the reaction is negative

Answer 4

Reaction is exothermic

Question 5

What happens

If the enthalpy change for the reaction is a positive number

Answer 5

The reaction is endothermic

Question 6

What happens when the temperature is increased for an endothermic reaction

Answer 6

Shift to the right

Question 7

What happens if the temperature is increased for an exothermic reaction

Answer 7

Shift to left

Question 8

What does pressure only affect

Answer 8

Reactions involving gases

Question 9

What would an increase in pressure cause if the number of moles of gas was greater for the reactants

Answer 9

Shift right to low pressure side

Question 10

What happens if a substance becomes more concentrated in a reaction

Answer 10

Shifts to reduce concentration

Question 11

Speeds up both forward and reverse reactions but doesn’t change the position of the equilibrium

Answer 11

Catalyst

Question 12

What happens if you add a substance

Answer 12

Causes equilibrium to shift away from the side where the substance was added

Question 13

What happens when you remove a substance

Answer 13

Causes equilibrium to shift to the side where the substance was removed

Question 14

Increase temp

Answer 14

Causes equilibrium of endothermic reaction to shift to the right

Causes equilibrium of exothermic reaction to shift to the left

Question 15

Decrease temp

Answer 15

Equilibrium of exothermic to shift right

Endothermic shift left

Question 16

Increase pressure

Answer 16

Causes reaction to shift away from the side that has the greatest number of moles of gaseous substances

Question 17

Decrease pressure

Answer 17

Causes reaction to shift toward the side that has the greatest number of moles of gaseous substances

Question 18

Increase volume

Answer 18

Reaction shifts toward side that has greatest number of moles of gaseous substances

Question 19

Decrease volume

Answer 19

Cause reaction to shift away from side that has greatest number of moles of gaseous substances

Question 20

Adding inert gas

Answer 20

Does not affect equilibrium