Equilibrium

Question 1

what is equilibrium

Answer 1

Equilibrium can be defined as a state reached of a reversible reaction, in which the rate of the forward and backward reactions equal.

Question 2

examples of equilibrium

Answer 2

• water cycle

- closed water bottle

Question 3

features of the equilibrium state

Answer 3

• dynamic (ever changing, f and r reaction occurring at equal rate)
• closed system (no change of matter with the surroundings)
• concentration of products and reacts constant at equilibrium
• no macroscopic change in properties (no visible change at blind eye)
• can be reached from either direction

Question 4

what is the equilibrium constant expression

Answer 4

Kc= [C]^c[D]^d/[A]^a[B]^b or

products/reactants

Question 5

what does Kc indicate

Answer 5

the extent of the reaction under the conditions used

- it has no units

Question 6

High Kc

Answer 6

a lot of products

Question 7

low Kc

Answer 7

small amount of reactants converted to products

Question 8

kc= 1

Answer 8

reaction at equilibrium

Question 9

kc

Answer 9

reaction hardly goes

Question 10

kc> 10^10

Answer 10

reaction complete

Question 11

kc= 0.01

Answer 11

reactants predominate

Question 12

kc= 100

Answer 12

products predominate

Question 13

whats it the reaction quotients

Answer 13

Q= the Kc calculations when you don have concentration values/reaction isn’t at equilibrium

Question 14

what is Le Chatelier principle

Answer 14

• when a system at equilibrium is disturbed, the equilibrium position will shift in the direction which tends to minimize, or counteract, the effect of the disturbance
  LIKE DIFFUSION

Question 15

how do catalysts affect equilibrium position

Answer 15

• they don’t. But it does affect the speed at which the reaction reaches equillibiurm