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Ozone, O3(g), is a form of elemental oxygen that is important in the absorption of ultraviolet radiation in the stratosphere. It decomposes to O2(g) at room temperature and pressure according to the following reaction:

ΔH = -284.6 kJ

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Greg Montoya
Greg MontoyaLv10
27 Nov 2020

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Related questions

The 1995 Nobel Prize in Chemistry was shared by Paul Crutzen, F. Sherwood Rowland, and Mario Molina for their work concerning the formation and decomposition of ozone in the stratosphere. Rowland and Molina hypothesized that chlorofluorocarbons (CFCs) in the stratosphere break down upon exposure to UV radiation, producing chlorine atoms. Chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. Using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone.

1. ClO(g)+O3(g)------>Cl(g)+2O2(g) Delta Hrxn=-122.8KJ/mol

2. 2O3(g)------>3O2(g) Delta Hrxn=-285.3 KJ/mol

3. O3(g)+Cl(g)------->ClO(g)+O2(g) Delta Hrxn=?

The naturally occurring ozone and oxygen cycles are significant in sustaining the Earth\'s stratosphere. One series of reactions concerning formation and destruction of ozone by oxygen gas is represented by the Chapman cycle. Arrange the reactions in order according to the cycle. Ozone creation --> Ozone destruction
O2 + hv --> 2 O
O + O2 ⇋ O3 + hv
O + O3 --> 2 O2

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 --> ClO + O2

what total volume of ozone at a pressure of 25.0 mmHg and a temperature of 225 K is destroyed when all of the chlorine from 15.0 g of CF3CL goes through ten cycles of the given reaction?.

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