Le Chatelier's Principle

Question 1

What is Le Chatelier’s Principle

Answer 1

If a system at equilibrium is subjected to a change, processes occur which tend to counteract the change

Question 2

N_2(g) + 3H_2(g) <=> 2NH_3(g) + HEAT

What happens if temperature increases

Answer 2

Reverse reaction dominates

Reaction goes to the left because it goes to the cooler side (endothermic)

Question 3

N_2(g) + 3H_2(g) <=> 2NH_3(g) + HEAT

What happens if there is a decrease in temperature

Answer 3

Forward reaction dominates

Reaction goes to the right hand side because it goes to the heat generating side (exothermic)

Question 4

N_2(g) + 3H_2(g) <=> 2NH_3(g) + HEAT

What happens if there is an increase in pressure

Answer 4

Forward reaction dominates

The reaction goes to the right because there is the least number of of molecules

Question 5

H_2(g) + I_2(g) <=> 2HI_(g)

What happens if more I₂ is added

Answer 5

The reaction goes to the right hand side so more HI is produced