Chem equilibria

Question 1

Dynamic equilibrium

Answer 1

Dynamic equilibrium refers to a state in a reversible system in which the rates of the forward and backward reactions are continuing at the same rate, resulting in no net change in the concentrations of the reactants and products

Question 2

Le Chatelier’s Principle

Answer 2

When a system at equilibrium is subjected to a change, the system will react to counteract the change imposed so as to re–establish the equilibrium

Question 3

Effect of pressure increasing

Answer 3

According to Le Chatelier’s Principle,
- when the gas is compressed, total pressure increases,
- the system will try to counteract the increase in total pressure by favoring the reaction that decreases the total pressure.
- Hence, the forward reaction is favoured as it produces fewer gas particles, and the equilibrium position shifts to the right.

Question 4

Effect of temperature increases

Answer 4

According to Le Chatelier’s Principle,
- when the syringe is warmed, the system will try to counteract the increase in temperature by favouring the backward endothermic reaction in order to absorb heat.
- Hence, the position of equilibrium will shift left.