Chemical Equilibrium

Question 1

What is a reversible reaction?

2

Answer 1

A reversible reaction is one in which the products react to give back the reactants,

I.e. the reaction is going in both directions

Question 2

What is chemical equilibrium?

Answer 2

A state of dynamic balance in a reversible reaction where the rate of the forward reaction is the same as the rate of the backward reaction

Question 2

What is chemical equilibrium?

Answer 2

A state of dynamic balance in a reversible reaction where the rate of the forward reaction is the same as the rate of the backward reaction

Question 3

What is a dynamic state?

Answer 3

In a dynamic state the reactants are continuously forming product and the products are continuously forming reactants

Question 4

What is a dynamic equilibrium?

Answer 4

In a dynamic equilibrium the rate of the forward reaction is equal to the rate of the backward reaction

Question 5

What does Le Chatelier’s Principle state?

Answer 5

If a stress is applied to a system at equilibrium, the system re-adjusts to relieve the stress applied

Question 6

What does Le Chatelier’s Principle predict?

2

Answer 6

That in an all-gaseous reaction an increase in pressure will favour the reaction that brings about a reduction in volume

I.e. it will shut towards the side with the smaller number of molecules

Question 7

Define Equilibrium constant (Kc)

Answer 7

Kc = [C]c [D]d / [A]a [B]b