Energy Transfer

Question 1

What is Keq’?

Answer 1

Equilibrium Constant:
constant for a given reaction and reflects the
distribution of products and reactants at equilibrium

Question 2

What is Qcell’?

Answer 2

Reaction Quotient (Mass Action Ratio):
calculated in the same way as Keq’ except that the
reaction does not have to be at equilibrium.

• At equilibrium, Qcell’ = Keq’.

Question 3

What is ΔG’?

Answer 3

Actual Free Energy Change:
free energy change for a reaction that does not assume anything other than pH7 and dilute reaction condition.
All deviations from standard conditions must be indicated.

• ΔG’ = 0 at equilibrium

Question 4

What is ΔG’o?

Answer 4

Standard Free Energy Change:
free energy change for any reaction under standard conditions (everything at 1 M).

• In this state, Qcell = 1