exam 1

Question 1

How do you find the equilibrium constant?

Answer 1

Products/Reactants

Question 2

What is a dynamic equilibrium reaction?

Answer 2

There is no change in concentration. Reaction still occurring even if we can’t see it.

Question 3

What is the net charge of a dynamic equilibrium reaction?

Answer 3

Zero

Question 4

What does it mean when K=Q?

Answer 4

The reaction has reached equilibrium

Question 5

what happens if Qc>Kc?

Answer 5

more reactants form

Question 6

What happens if Qc=Kc?

Answer 6

no further net change

Question 7

What is happening when k is small?

Answer 7

it means that the reactant is yielding little product. If k is small then no reaction is occurring.

Question 8

What is a large k?

Answer 8

It’s when there is little reactants left. If it’s a large k we say the reaction goes to completion

Question 9

What units are K and Q in?

Answer 9

they have no units

Question 10

What states of matter do not appear in Q or K?

Answer 10

liquid and solids

Question 11

Starting at equilibrium, what happens when you add reactants to the reactant side?

Answer 11

It will shift to form more products

Question 12

Which way will the reaction shift when removing reactants?

Answer 12

It will shift to the left

Question 13

What happens when you add reactants to the left?

Answer 13

the rxn shifts to the right

Question 14

what way will the reaction shift if you remove reactants?

Answer 14

to the left

Question 15

if you add products to the right which way will the reaction shift?

Answer 15

to the left

Question 16

If you are adding heat (increasing temp) which way does the reaction shift?

Answer 16

shifts to the left

Question 17

if you are removing heat (decreasing temp) which way does the reaction shift?

Answer 17

shifts to the right

Question 18

What does an arrhenius acid contain and generate?

Answer 18

it contains H+ and generates H+ in H2O

Question 19

what does an arrhenius base contain and generate?

Answer 19

It contains OH- and it generates OH- in H2O

Question 20

what is a Brøndsted- Lowry acid?

Answer 20

A proton donor. Donates H+

Question 21

What is a Brøndsted-Lowry base?

Answer 21

A proton acceptor. Accepts H+

Question 22

Is it weak or strong when it completely dissociates?

Answer 22

Strong. Will have a large k

Question 23

Is it weak or strong when it incompletely dissociates?

Answer 23

Weak

Question 24

What is pH a measure of?

Answer 24

H3O+

Question 25

What is Kw?

Answer 25

it’s an ion product constant

Question 26

Why does it mean by water can be amphiprotic?

Answer 26

It means water can act like a base and acid

Question 27

If you add an acid what increases?

Answer 27

H3O+

Question 28

if you add a base what increases?

Answer 28

OH-

Question 29

Is water basic, acidic, or neutral?

Answer 29

water is neutral

Question 30

How do you find pH?

Answer 30

-log([H3O+])

Question 31

How do you find pOH?

Answer 31

-log([OH-])

Question 32

Why are some common weak acids?

Answer 32

HCl HBr

Question 33

what are oxoacids? (strong acid)

Answer 33

it’s when the number of O atoms exceeds the number of H atoms by 2 or more an example would be sulfuric acid

Question 34

What are oxoacids in regards to weak acids?

Answer 34

it’s when the number of O atoms equals or exceeds by 1 the number of ionizable protons.

Question 35

What are some strong bases with group 1 metals?

Answer 35

Li, Na, K, Rb, Cs

Question 36

what are some strong bases that are part of the heavy metal group?

Answer 36

Ca, Sr, Ba

Question 37

What does a polyprotic acid mean?

Answer 37

it means there are more than 1 ionizable protons