Equilibria

Question 1

Define dynamic equilibrium

Answer 1

When the forward and backward rate of reaction is the same and remains at a constant rate

Question 2

Define Le Chatelier’s principle

Answer 2

When a system is subject to change, the system will alter to lessen the effect of that change

Question 3

What effect does increasing the temperature have on a dynamic equilibrium system?

Answer 3

Increasing temperature favours the endothermic reaction (+ve ΔH) as the excess heat needs to be removed from the system to lessen the effect of the initial increase. It will increase the yield of the endothermic products.
and vice versa

Question 4

What effect does increasing pressure have to do on a dynamic equilibrium system?

Answer 4

Increasing pressure favours the side of the reaction with fewer moles as this will help to release the build up in pressure. It’ll increase the yield of the products on that side of the reaction. and vice versa

Question 5

What effect does increasing the concentration have on a dynamic equilibrium system?

Answer 5

Increasing the concentrations of the reactants will favour the reaction that produced the products as more molecules are available to react. it’ll increase the yield of the products. (vice versa and decreasing the concentration of products will favour the reaction that reforms the reactants.)

Question 6

What can change the value of kc?

Answer 6

By changing the reaction temperature as the equilibrium position change results in different concentrations of reactants and products.