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. Jsing the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone. (1) C10(g) + O₂(g) → CI(g) +20₂(g) (2) 20,(g) →30₂(g) (3) Alli- 0₂(g) + Cl(g) → CIO(g) + O₂(g) AH = -122.8 kJ All = -285.3 kJ Alli?

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. Jsing the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone. (1) C10(g) + O₂(g) → CI(g) +20₂(g) (2) 20,(g) →30₂(g) (3) Alli- 0₂(g) + Cl(g) → CIO(g) + O₂(g) AH = -122.8 kJ All = -285.3 kJ Alli?

Chemistry

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ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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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) C10(g) + O₂(g) → Cl(g) +20₂(g) AH
(2) 20,(g) →30₂(g)
(3) 0₂(g) + Cl(g) → CIO(g) + O₂(g)
Allis=
= -122.8 kJ
AH = -285.3 kJ
AHin = ?
kJ

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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)Δ?∘rxn=−122.8 kJ (2)2O3(g)⟶3O2(g)Δ?∘rxn=−285.3 kJ (3)O3(g)+Cl(g)⟶ClO(g)+O2(g) Δ?∘rxn= ?
MN IN 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) CIO(g) + O,(g) → Cl(g) + 20,(g) AHxn = -122.8 kJ AHn = -285.3 kJ | rxn AHn = ? (3)°O + (3)OIƆ (3)1Ɔ+(3)*o (£) (3) 0E – (3)°07 (2) rxn %3D = UXHV kJ MacBook Pro Q Search or enter website name The & %23 $4 3. 4. 5. 7. 6. delete R H. K. re B. HE MOSISO command option
Discuss the mechanism by which CFCs and related compounds destroy the ozone layer. What chemical bond in the CFC is critical in this mechanism?
The overall reaction of hydroxide radical with hydrogen gas occurs as follows: OH (g) + H2(g) – H20(g) + H'(g) Part A This reaction plays a significant role in the chemistry of the earth's atmosphere by eventually converting OH to HO, through the subsequent reaction of H with O2. HO2 is involved in the destruction of stratospheric ozone (J. Phys. Chem. A, 2006, 110. 6978). Determine the activation energy for the reaction of OH with H, reaction. O 16.4 kJ mol The rate constants for the reaction of OH with H2 were found to be 1.83x10' L mol s'at 107. °C and 5.68×10° L mol's at 37. C. -1 O -85.9 kJ mol -1 O -16.4 kJ mol O 54.8 kJ mol O 65.9 kJ mol
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