Which of the following are true statements about equilibrium systems? Options: T

Question

Which of the following are true statements about equilibrium systems?

Options: True or False

a) For the following reaction at equilibrium:
2 H2(g) + O2(g) ? 2 H2O(g)
the equilibrium will shift to the right if the volume is doubled.

b) For the following reaction at equilibrium:
H2(g) + F2(g) ? 2HF(g)
removing H2 will increase the amount of F2 present once equilibrium is reestablished.

c) For the following reaction at equilibrium:
CaCO3(s) ? CaO(s) + CO2(g)
increasing the total pressure by adding Ar(g) will shift the equilibrium to the left.

d) For the following reaction at equilibrium:
CaCO3(s) ? CaO(s) + CO2(g)
adding more CaCO3 will shift the equilibrium to the left.

e) Increasing the temperature of an endothermic reaction shifts the equilibrium position to the left.

Explanation / Answer

a) For the following reaction at equilibrium:
2 H2(g) + O2(g) ? 2 H2O(g)
the equilibrium will shift to the right if the volume is doubled.

TRUE (Increase in volume leads to decrease in number of moles )

b) For the following reaction at equilibrium:
H2(g) + F2(g) ? 2HF(g)
removing H2 will increase the amount of F2 present once equilibrium is reestablished.

(TRUE ) removing H2 will make the reaction more towards the left (LeChatlier's principle)

c) For the following reaction at equilibrium:
CaCO3(s) ? CaO(s) + CO2(g)
increasing the total pressure by adding Ar(g) will shift the equilibrium to the left.

TRUE Increasing pressure will lead move the equilibrium towards higher number of moles

d) For the following reaction at equilibrium:
CaCO3(s) ? CaO(s) + CO2(g)
adding more CaCO3 will shift the equilibrium to the left.

FALSE rather right ( Le'Chatlier's principle)

e) Increasing the temperature of an endothermic reaction shifts the equilibrium position to the left.

FALSE(It moves more towards right )

Prodcuts + energy ----> Reactants

Increasing temperature is like adding energy .....THe only way it can consume energy is take the reaction forward towards right

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