Revirisble Reactions

Question 1

What is a reversible reaction?

Answer 1

Reversible reactions are ones which occur in both directions at the same time.

Question 2

When is equilibrium reached?

Answer 2

when the forward and reverse reactions, of a reversible reaction, occur at the same rate (the reaction must be in a closed system).

Question 3

What happens at equilibrium?

Answer 3

At equilibrium, both reactions are still happening, but there’s no overall effect (it’s a dynamic equilibrium). This means the
concentrations of reactants and products have reached a balance and won’t change.

Question 4

what is a closed system?

Answer 4

A closed system means none of the reactants or products can escape and nothing else can get in.

Question 5

Does reaching an equilibrium indicate that the amounts of products and reactants are equal?

Answer 5

NO!
-When a reaction’s at equilibrium it doesn’t mean the amounts of reactants and products are equal.
-If the equilibrium lies to the right, the concentration of products is greater than that of the reactants
-If the equilibrium lies to the left, the concentration of reactants is greater than that of the products.

Question 6

What is an exothermic reaction?

Answer 6

An exothermic reaction is one which transfers energy to the surroundings usually by heating. This is shown by a rise in temperature e.g. combustion

Question 7

What is an endothermic reaction?

Answer 7

an endothermic reaction is a reaction which take energy in from the surroundings. This is shown by a fall in temperature

Question 8

in a reversible reaction, if the reaction is exothermic in one direction it will be…..

Answer 8

endothermic in the other