Factors on EQUILIBRIUM

Question 1

What is Le Chatelier’s Principle?

Answer 1

external condition that disrupt the system, equilibrium shift to new equiposition

Question 2

What is the external condition?

Answer 2

• Catalyst
• Changes of concentration
• Changes of pressure
• Presence of noble gas ( P increase)
• Changes in Temperature

Question 3

Does catalyst affect Kc or Kp?

Answer 3

No, it only reduce time taken to reach equilibrium

Question 4

” aA + bB ⇌ cC + dD “
If add more reactant, equi shift to?

Answer 4

to the product ( to the right )

Question 5

” aA + bB ⇌ cC + dD “
If add more product, equi shift to?

Answer 5

reactant ( left )

Question 6

” aA + bB ⇌ cC + dD “
Remove reactant, equi shift to?

Answer 6

Reactant ( left )

Question 7

” aA + bB ⇌ cC + dD “
Remove product, equi shift to?

Answer 7

Product ( right )

Question 8

Does final position same like initial position?

Answer 8

No

Question 9

Does amount of [product] or [reactant] after new equi same as amount of [product] or [reactant] initial equilibrium?

Answer 9

No

Question 10

What happen to rate of reaction when pressure is increase?

Answer 10

Rate of reaction increase

Question 11

What happen to the pressure when noble gasses is added?

Answer 11

increase

Question 12

When P increase, equilibrium shift to the side that have ________ number of moles.

Answer 12

lower

Question 13

When P decrease, equilibrium shift to the side that have ______ number of moles.

Answer 13

higher

Question 14

Does pressure affect equilibrium Kp?

Answer 14

No

Question 15

Does changes in pressure affect equilibrium position?

Answer 15

Yes

Question 16

Does temperature affect equilibrium constant , K?

Answer 16

Yes

Question 17

When T is increased, does the rate forward and reverse is equal?

Answer 17

no

Question 18

Given Delta H = +ve
1.Rate of forward equal to?
2.Rate of reverse equal to?

Answer 18

1. Endothermic
2. Exothermic

Question 19

Given Delta H = +ve
What happen when T is increased?
What happen to the yield?
Explain

Answer 19

• Equi shift to the right ( forward ) to absord heat to lower the T
• concentration of product increase

Question 20

Given Delta H = +ve
What happen when T is decreased?
What happen to the yield?
Explain

Answer 20

• Equilibrium shift to left ( reverse)
  to release heat to increase the T
• concentration of reactant increase

Question 21

Given Delta H = -ve
1.What does forward reaction equal to?
2.What does reverse reaction equal to?

Answer 21

1. Exothermic
2. Endothermic

Question 22

Given Delta H = -ve
What happen when T is increased?
What happen to the yield?

Answer 22

• Equilibrium shift to the left ( reverse )
  to absorb heat to lower the T
• reactant increased

Question 23

Given Delta H = -ve
What happen when T is decreased?
What happen to the yield?

Answer 23

-Equilibrium shift to the right ( forward ) to release heat to increase the T
- product increased