Question

4.Amixture of gases is at equilibrium: (a) Does the equilibrium shift to the left or to the right when some SO2(g) is added to the reaction mixture? (b) Does the equilibrium shift to the left or to the right when some H2O (g) is removed from the reaction mixture? (c) In which direction does the equilibrium shift as the temperature is raised? (d) In which direction does the equilibrium shift as pressure is applied to the system?

Answer 1

a)

Adding product will shift the reaction in the direction of reactant as per Le chatelier Principle

So, Equilibrium moves to reactant side

Answer: Left

b)

Adding reactant will shift the reaction in the direction of product as per Le chatelier Principle

So, Equilibrium moves to product side

Answer: Right

c)

Increasing Temperature will shift the reaction in a direction which absorbs heat as per Le chatelier Principle

Forward reaction is exothermic in nature

hence, backward reaction will be favoured

So, Equilibrium moves to reactant side

Answer: Left

d)

Increasing pressure will shift the reaction in a direction which have lesser gaseous molecules as per Le chatelier Principle

Here reactant has less gaseous molecule

So equilibrium will move to left

So, Equilibrium moves to reactant side

Answer: Left