A sample of ozone, O3, ammounting to 0.10 mol, is placed in a sealed container o

Question

A sample of ozone, O3, ammounting to 0.10 mol, is placed in a sealed container of volume 1.0L and the reaction 2O3(g) 3O2(g) is allowed to reach equilibrium. Then 0.50 mol O3 is placed in a second container of volume 1.0L at the same temperature and allowed to reach equilibrium. Without doing any calculations, predict which of the following will be different in the two containers at equilibrium. Which will be the same? a.) amount O2; b.) partial pressur of O2; c.) the ratio PO2/PO3; d.0 the ratio (PO2)^3/(PO3)^2; e.) the ratio (PO3)^2/(PO2)^3. Explain each of your answers.

Explanation / Answer

The following are different

a) amount of O2

b) partial pressur of O2

c.) the ratio PO2/PO3

Since the initial concentrations are different the equilibrium concentrations of O2 and O3 will be different for the given reaction hence the simple ratio of PO2/PO3 also different

The following are same

d.) the ratio (PO2)^3/(PO3)^2;

e.) the ratio (PO3)^2/(PO2)^3.

For a reversible reaction, the ratio of equilibrium concentrations of products to the reactants is remains constant irrespective of their intial concentrations

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