3 c) Reversible Reactions and Equilibria

Question 1

Catalyst

Answer 1

Substance that speeds up a chemical reaction by providing an alternative pathway of lower activation energy. Catalysts are not used up and remain chemically unchanged at the end of the reaction.

Question 2

Dynamic equilbrium

Answer 2

The concentration of reactants and products in a reversible reaction remain constant but the reactions are still continuing. The rate of the forward reaction is equal to the rate of the reverse reaction.

Question 3

Pressure

Answer 3

The force acting on something per unit area, caused by molecules hitting the walls of their container.