C19- Equilibrium

Question 1

What is a homogenous equilibrium

Answer 1

equilibrium where all equilibrium species have the same state

Question 2

What is a heterogenous equilibrium

Answer 2

equilibrium where all equilibrium species have different states or phases

Question 3

how to calculate mole fraction of a gas

Answer 3

moles of that gas/ total gaseuous moles

Question 4

acronym for KC calculation

Answer 4

RICE

ratio, initial, change, end

Question 5

how to calculate partial pressure

Answer 5

mole fraction x total pressure

Question 6

What does Kp include

Answer 6

gases ONLY

Question 7

What do different values of Kc indicate

Answer 7

K=1 is equilibrium

K>1 towards products

K<1 towards reactants

Question 8

How does a catalyst effect an equilibrium

Answer 8

no effect on the position of equilibrium

speeds up the rate equilibrium is reached

speeds up rate of forwards and reverse reaction equally

Question 9

effect of changing pressure or concentration on the value of K

Answer 9

no effect

Question 10

effect of inc temperature on an exothermic value of K in equilibrium

Answer 10

value of K decreases with increasing temperature

raising temp decreases equilibrium yield

Question 11

effect of changing temperature on an endothermic value of K in equilibrium

Answer 11

value of K increases with increasing temperature

raising temp inc equilibrium yield of products

Question 12

how to find units for Kc

Answer 12

sub in units to Kc expression and cancel common units