Chemistry Practice Problems Gas Stoichiometry Practice Problems Solution: Ozone is depleted in the stratosphere by chlorine ...

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Solution: Ozone is depleted in the stratosphere by chlorine from CF3Cl according to the following set of equations:CF3Cl + UV light → CF3 + ClCl + O3 → ClO + O2O3 + UV light → O2 + OClO + O → Cl + O2What total volume of ozone measured at a pressure of 25.5 mmHg and a temperature of 226 K can be destroyed when all of the chlorine from 15.5 g of CF3Cl goes through ten cycles of the above reactions?

Problem
Ozone is depleted in the stratosphere by chlorine from CF3Cl according to the following set of equations:

CF3Cl + UV light → CF3 + Cl
Cl + O3 → ClO + O2
O3 + UV light → O2 + O
ClO + O → Cl + O2

What total volume of ozone measured at a pressure of 25.5 mmHg and a temperature of 226 K can be destroyed when all of the chlorine from 15.5 g of CF3Cl goes through ten cycles of the above reactions?

Solution

Concept: Ideal Gas Law with Stoichiometry.

First find the overall reaction per one cycle.

Next calculate the moles of O3 consumed per 1 cycle of reaction.

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