Unit 2 | Topics: principles of chemical equilibrium, direction of reaction/ reaction quotient

Question 1

can you determine the amount of moles when the reaction finishes?

Answer 1

can’t be determine cant assume that all of them do, the extent of the rxn depends on K equilibrium constant

Question 2

chemical equilibrium

Answer 2

the state when concentrations of reactants and products remain constant with time, the rate at which the products are formed equals exactly the rate at which the reactants are formed, no net change

Question 3

concentration of reactants DOES NOT equal concentration of products

Answer 3

concentration of reactants DOES NOT equal concentration of products

Question 4

About K

Answer 4

K is unitless and is constant at a given temp

Question 5

Do pure solids or liquids show up K equation

Answer 5

Pure solids or liquids do not have concentrations or pressures

Question 6

Large K: greater than 10^3

Answer 6

large [products] and small [ reactants] rxn proceeds essentially to completion
products are favored at equilibrium

Question 7

Intermediate K: between 10^-3 to 10^2

Answer 7

at equilibrium significant amounts of both reactants and products

Question 8

Small K: 10^-4

Answer 8

small [products] and large [reactants]
rxn does not proceed much at all
reactants are favoured at equilibirum

Question 9

Reaction Quotient

Answer 9

given certain reaction conditions (starting points) which way will the reaction go to reach equilibrium
“initial concentration”
rxn proceed until Q=K meaning it is at equilibirum

Question 10

…more to add