7 Chem Equillibria

Question 1

Reversible reaction

Answer 1

A reaction that can proceed in both the forward and the backward directions

Question 2

Dynamic equilibrium

Answer 2

A reversible process in a closed system which the rate of forward reaction is equal to the rate of the backward reaction, such that there is no change in the concentrations of products and reactants

Question 3

Equilibrium Constant

Answer 3

K = [products]^coeff / [reactants]^coeff
Exclude solids (and liquids for pressure constant)

Question 4

Reaction Quotient

Answer 4

Q = [products]^coeff / [reactants]^coeff
[products]/[reactants] are taken at any given time

Question 5

Degree of dissociation

Answer 5

Amount of substance dissociated/Initial amount of substance

Question 6

Le Chatelier’s Principle

Answer 6

If a system at dynamic equilibrium is subjected to a change that disturbs the equilibrium, the system will react in a way to counteract some of the effects of the change

Question 7

ΔG and equilibrium composition

Answer 7

ΔG = -RT ln K

Question 8

Haber Process

Answer 8

T: 450°C
p: 250 atm
Catalyst: Finely divided iron