SAC3

Question 1

At equilibrium all the concentrations are, because

Answer 1

• Concentrations are constant as they are formed and decomposed at the same rate.

Question 2

What is the difference b/w Q (Reaction Quotient) and K/Kc ( Equilibrium Constant)

Answer 2

• K = is used for system at equilibrium.
• Q= is used for system that has not reached equilibrium yet.

Question 3

Homogenous Equilibrium

Answer 3

Everything both on left side and right side has the same state.

Question 4

Heterogenous Equilibrium

Answer 4

There are more than 1 state on both sides e.g. liquids and gases.

Question 5

What is not included K/Kc calculations

Answer 5

• Solids.
• Liquids.

Question 6

If Kc is > 10^4

Answer 6

• Almost complete reaction.
• The [ Products] is higher than [ Reactants].

Question 7

If 10^-4<Kc< 10^4

Answer 7

• Extent of reaction is significant.
• Comparable amounts of reactants and products at equilibrium.

Question 8

If Kc<10^-4

Answer 8

• A negligible reaction occurs.
• The [ Reactants] is higher than [ Products].

Question 9

If volume increase []

Answer 9

• If volume increases the [ ] decreases.

Question 10

Increased [ of everything] equilibrium will shift and is this same with pressure

Answer 10

• Shift to side with less mols.
• YES.

Question 11

Decreased [ of everything] equilibrium will shift and is this same with pressure

Answer 11

• Shift to side with more mols.
• YES.

Question 12

Explain the effect on the position of equilibrium that adding water has to the above system. Refer to LCP in your answer.

Answer 12

• Addition of water.
• According to LCP the system will shift to partially oppose this change and will shift to the side of more mol to increase the concentration.
• Thus, The [ xyz] reaction is favored.