Equilibrium

Question 1

Difference between: dynamic equilibrium and static equilibrium

Answer 1

dynamic equilibrium: forward and reverse reactions are still going
static equilibrium: forward and reverse reactions have stopped

they both have the same rate

Question 2

Equilibrium

Answer 2

balance between the forward and reverse reactions

Question 3

Do reversible reaction proceed to completion?

Answer 3

no.

Question 4

At equilibrium:

Answer 4

• rate of the fwd reaction = rate of the reverse reaction
• entropy is at a maximum
• Gibbs free energy is at a minimum

Question 5

reaction quotient (Q)

Answer 5

how far the reaction has proceeded toward equilibrium

Question 6

Q equation = Keq equation

Answer 6

Q equation = Keq equation

Question 7

if Q > Keq …

Answer 7

delta G > 0
Reaction proceeds in REVERSE direction
There is a greater conc of products
reverse rxn is increased to restore eq.

Question 8

if Q

Answer 8

delta G

Question 9

if Q = Keq …

Answer 9

delta G = 0
Reaction is in DYNAMIC EQUILIBRIUM
the fwd and reverse rxn rates of rxn are equal
reactants and products are present in eq. proportions

Question 10

A (aq) + 2B (g) —> C (g) + heat

will shift to the RIGHT if:

Answer 10

1. A or B is added
2. C is removed
3. Temp is reduced
4. Pressure is increased
5. Volume is reduced

Question 11

A (aq) + 2B (g) —> C (g) + heat

will shift to the LEFT if:

Answer 11

1. C is added
2. A or B is removed
3. Temp is increased
4. Pressure is reduced
5. Volume is increased