7.1-7.6

Question 1

equilibrium

Answer 1

when a reaction and its reverse reaction occur at the same rate

Question 2

how to tell when equilibrium is reached on concentration graph…

Answer 2

when concentrations are both constant

Question 3

how to tell when equilibrium is reached on rate graph…

Answer 3

when rates are the same

Question 4

once equilibrium is reached, the amount of each reaction and product…

Answer 4

remains constant

Question 5

favored

Answer 5

one direction in an equilibrium equation is favored

Question 6

if the forward reaction is exothermic…

Answer 6

the reaction will be favored (smaller Ea)
there will be more products in equilibrium mixture
opposite is true for endothermic

Question 7

in endothermic equilibrium there are more

Answer 7

reactants

Question 8

the smaller Ea is

Answer 8

favored

Question 9

catalysts in equilbirium

Answer 9

don’t change the amount of reactants/products just makes easier

Question 10

equilibrium constant with molarity

Answer 10

[products]^coefficient/[reactants]^coefficient

Question 11

equilibrium constant with pressure

Answer 11

(products)^coefficient/(reactants)^coefficient

Question 12

if k>1

Answer 12

reaction favors products, exothermic
reactants to products

Question 13

if k<1

Answer 13

reaction favors reactants, endothermic
products to reactants

Question 14

homogenous equilibrium

Answer 14

all reactants and products in the same state

Question 15

use the value of __ for the concentration of a pure substance

Answer 15

1
such as solid/liquid water
(eliminate them from expression!)

Question 16

when finding Kc eliminate…

Answer 16

(liquid) water and solids

Question 17

ICE table

Answer 17

Initial, change, equilibrium

Question 18

I

Answer 18

reactants: given in problem, mol/L
products: 0

Question 19

E

Answer 19

reactants: use found change value
products: given

Question 20

C

Answer 20

use given value to find rate for product, use coefficients to find it for the rest
positive for products, negative for reactants

Question 21

reactant quotient Q

Answer 21

like Kc but for current conditions
to find it, sub initial concentrations of reactants and products into the equilibrium expression

Question 22

Q vs K

Answer 22

nature wants Q=K(eq)
if Q<K>K proceed to reactants</K>

Question 23

equilibrium constant of a reaction in the reverse reaction..

Answer 23

reciprocal of equilibrium constant of forward reaction

Question 24

if you multiply reaction constant

Answer 24

raise the constant to that power

Question 25

K3=

Answer 25

K1*K2

Question 26

if you flip an equation

Answer 26

take reciprocal of K

Question 27

to use solver feature

Answer 27

enter equation equal to zero
go over x, put 0, alpha enter

Question 28

analyzing diagrams

Answer 28

using balanced equation can find q for each and decide it compared to k

Question 29

adding a substance

Answer 29

shifts away from substance

Question 30

removing a substance

Answer 30

shifts toward substance

Question 31

change in temperature

Answer 31

heat is like an added substance/product, treat it as such

Question 32

change in volume or pressure

Answer 32

higher volume/lower pressure favors the side of the equation with more moles (and vice versa)

Question 33

p and v are

Answer 33

inversely related

Question 34

bigger solubility number

Answer 34

more soluble

Question 35

solubility

Answer 35

the quantity of a substance that dissolves t form a saturated solution

Question 36

increased temperature vs. solubility

Answer 36

more soluble bc more and better interactions

Question 37

common ion effect

Answer 37

if present solubility of the salt will decrease (less room)

Question 38

unsaturated

Answer 38

hasn’t reached equilibrium yet
not everyting dissolved

Question 39

saturated

Answer 39

max dissolved
at equilibrium

Question 40

will a precipitate form

Answer 40

Q<K>K precipitate</K>

Question 41

solubility

Answer 41

all Na, K, ammonium (NH4), and nitrate salts (NO3)are soluble in water