Question

QUESTION 18 Consider the following reversible reaction equation: 2502(g) + O2(g) → 2503(g) Ka = 1.2 x 103 Complete the following sentences (a-e) by selecting the best choice from the dropdown menus. a) This is an example of a equilibrium b) At equilibrium, this system will contain mostly c) If more SO2 is added to this system at equilibrium, the reaction will shift towards the d) If oxygen gas is removed from this system at equilibrium, the reaction will shift towards the e) If the volume of this system at equilibrium is increased, the reaction will shift towards the

Answer 1

Solution :

18) For the given reversible reaction,

2SO2(g) + O2(g) ---> 2SO3(g)

A) This is an example of the homogeneous equilibrium.

(Because reactants and products are in the same gaseous phases.)

B) At equilibrium, this system will contain mostly products.

(Because equilibrium constant is greater than 1).

C) If SO2 is added, reaction will shift towards products.

(According to Le-chatelier principle, addition of reactant shifted equilibrium towards forward direction).

D) If oxygen is removed, the reaction will shift towards reactants.

(According to Le-chatelier principle, removal of reactant shifted equilibrium towards backward direction).

E) If volume of the system is increases, then reaction shifted towards reactants

(Increase in volume decreases the pressure, hence decrease in pressure shifted equilibrium towards that direction where number of moles are maximum. Hence, equilibrium shifted towards backward direction).