Chapter 14-Chemical Equilibrum

Question 1

What does it mean when K>1

Answer 1

• products are favoured

- reaction lies to the right

Question 2

What does it mean when K<1?

Answer 2

• reactants are favoured

- reaction lies to the left

Question 3

What does it mean when K=1

Answer 3

• neither reaction is favoured

- forward reaction proceeds about halfway to completion

Question 4

Q

Answer 4

• reaction proceeds to the right

- products need to be formed

Question 5

what doeQ>K mean?

Answer 5

• reaction proceeds to the left

- reactants need to be formed

Question 6

Q=K

Answer 6

-reaction is at equilibrum

Question 7

Increasing the amount of reactant (Q

Answer 7

-causes a shift to the right

Question 8

Decreasing the amount of reactant (Q>K)

Answer 8

-causes a shift to the left

Question 9

Increasing the amount of product (Q>K)

Answer 9

• causes a shift to the right

Question 10

Decreasing the amount of product (Q

Answer 10

-causes a shift to the right

Question 11

Decrease in volume, increase in pressure

Answer 11

• shift to the side with fewer moles

Question 12

Increase in volume, decrease in pressure

Answer 12

• shift to the side with more moles

Question 13

Increasing the temperature of an exothermic reaction

Answer 13

• reaction shifts left

- decreases K

Question 14

Decreasing the temperature of an exothermic reaction

Answer 14

• reaction shifts right

- increase K

Question 15

increasing temp of an endothermic reaction

Answer 15

• reaction shifts left

- increases K

Question 16

decreasing temp of an endothermic reaction

Answer 16

• shift left

- decreases K

Question 17

Five Strong Acids

Answer 17

HCI, HBR, HI, HNO3, HClO4, H2SO4

Question 18

Five Strong Bases

Answer 18

Li, Na, K, Ca, Ba, Sr

Question 19

How to find pH of strong acid?

Answer 19

• no ICE Table jsut plug it into pH equation

Question 20

How to find pH of a strong base?

Answer 20

-no need for ICE Table, just plut into poH= -log(OH)

Question 21

How to find pH of a weak acid?

Answer 21

• ICE Table

Question 22

how to find pH of weak base?

Answer 22

• ICE Table, use Kb

Question 23

how to find pH of one strong+one weak acid?

Answer 23

• take the H30+ of the strong acid

Question 24

how to find pH of two weak acids?

Answer 24

• take the H30+ of the acid with the higher ka, only applicable if Ka differs by 100x

Question 25

pH of two strong acids?

Answer 25

-add up both concentrations and take -log