Equilibrium

Question 1

Define:

Reversible reaction

Answer 1

Products can react to form the original Reactants

Question 2

What are some characteristics of Equilibrium Reactions?

Answer 2

1. Closed system
   no products or reactants escape
2. Concentration of reactants and products stays constant
3. Dynamic
   reactants and products are continuously reacting
4. Rate of forward reaction = Rate of reverse reaction

Question 3

State:

Le Chatelier’s principle

Answer 3

If a disturbance is applied to a system in equilibrium,

Processes within the system will occur to counteract the change

Question 4

What happens when you increase the concentration of reactants?

Answer 4

Equilibrium position will move to the right to favour forward reaction

More products are formed until equilibrium is restored

Question 5

What happens when you increase the concentration of products?

Answer 5

Equilibrium position will move to the left to favour forward reaction

More reactants are formed until equilibrium is restored

Question 6

For reversible equation: X(g) + Y(g) –> XY(g)

What happens if you increase the pressure of the system?

Answer 6

Equilibrium position will move to the right to favour forward reaction

Fewer gas molecules –> less pressure

Question 7

When increasing pressure, do you take into account the number of moles of solids/liquids to find the equilibrium position?

Answer 7

NO

molecules/ions in solids/liquids are densely packed together –> can’t be compressed easily