Question

When will Le Chatelier's principle come into effect?

a)at the beginning of a reaction, when there are only reactants

b)when a reaction has reached chemical equilibrium

c)when a catalyst is added to a reaction mixture

d)when a reaction is occurring but not yet at equilibrium

Answer 1

the answer is B, i have the same class on plato. the principal only comes into effect when the equilibrium is disturbed 

Answer 2

Answer: Option (b) is the correct answer.

Explanation:

According to Le Chatelier's principle, when a system in equilibrium is brought to any change in concentration, temperature or pressure then the equilibrium will shift to the direction opposing the change.

Therefore, we can conclude that when a reaction has reached chemical equilibrium then Le Chatelier's principle will come into effect.