Equilibrium

Question 1

What does change in temperature do to endothermic vs exothermic reaction?

Answer 1

Endo:

• heat is a reactant
• incr heat adds reantant, shift right
• reduce heat takes away reactant, shift left

Exo:
- heat is product
= incr heat, add product, shift left
- reduce heat, take away product, shift left

Question 2

What factors don’t influence keq?

Answer 2

concentration, catalyst, inert gas add/removal

Question 3

How does change in pressure affect keq?

Answer 3

reduce pressure > shift side with more moles gas

incr pressure > shift side with less moles of gas

restore eq

Question 4

What is the relationship of Q to Keq?

Answer 4

Q > Keq
- overshot eq, shift left bc too many products made

Q < Keq
- not yet at Keq, shift right bc not enough products, too many reactants

Question 5

How does delta G influence equilibrium?

Answer 5

• Exergonic delta G < 0, favors the products
• expect more at Keq, with little concentratino of reactants

Endergonic delta G > 0, favors reactants
- expect more reactants to be left over with little product formed