Question

Describe how the equilibrium of the following reaction would shift, if at all, if the following...

Describe how the equilibrium of the following reaction would shift, if at all, if the following changes were made.

AgNO3 (aq) + KI (aq) ⇌ AgI (s) + KNO3 (aq)

ΔHrxn = – 45.2 kJ/mol

a. Additional AgI (s) is added to the reaction mixture

b. Additional KI is added to the reaction mixture

c. The reaction vessel is cooled down

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Homework Answers

Answer #1

According to Lechateliers principle, an increase in concentration of any of the reactant shifts the equilibrium to right and increase in concentration of any of the product shifts the equilibrium to left.

Thus,

a) Additional AgI (s) is added to the reaction mixture - equilibrium shift to left

b) Additional KI is added to the reaction mixture - equilibrium shift to right

c) Since the equilibrium is exothermic in forward direction, a decrease in temperature favours product formattion -- equilibrium shift to right

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