Topic 10

Question 1

Reversible reactions can reach Dynamic equilibrium

Answer 1

At dynamic equilibrium the concentrations of reactants and products stay constant

Question 2

Homogeneous equilibria and kc

Answer 2

A homogeneous system is a system in which everything is in the same physical state
All the products and reactants are included in the expression for KC

Question 3

Heterogeneous equilibria and Kc

Answer 3

In heterogeneous systems not everything is in the same physical state. This means no solids or pure liquids are included. This is because their concentrations remain constant Throughout the reaction

Question 4

Catalysts… The equilibriums constant

Answer 4

Don’t affect

Question 5

Le Chatelier’s principal

Answer 5

If there’s a change in concentration pressure or temperature the equilibriums will move to help counteract this change

Question 6

If you increase concentration of a reactant…

Answer 6

The equilibrium tries to get rid of the extra reactants it does this by making more products so equilibria shifts to the right

Question 7

If you increase the pressure…

Answer 7

Increasing the pressure shifts equilibriums to the side with fewer gas molecules this reduces the pressure

Question 8

Temperature and equilibria

Answer 8

Increasing the temperature means adding heat.the equilibriums shifts to the endothermic direction to absorb this extra heat. Decreasing the temperature removes heat and therefore the equilibrium will shift to the exothermic direction to try to release and therefore replace the heat