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Consider the greenhouse gases, CF2Cl2 and CH2CF2.  These have the following properties: CF2Cl2:  ΔGfo = -491 kJ/mol, atmospheric lifetime = 102 years, ozone depletion potential = 0.73 CH2CF2:  ΔGfo = -451 kJ/mol, atmospheric lifetime = 5.4 years, ozone depletion potential = 0.0 Clearly, CH2CF2 is less hazardous in the atmosphere than CF2Cl2.  Is it thermodynamically favorable under standard conditions to react CF2Cl2 with H2 gas to convert it to CH2CF2?  (ΔGfo = 0 for H2 and Cl2) CF2Cl2 +  H2 ⇌  CH2CF2 +  Cl2 Justify your answer and calculate the equilibrium constant for this reaction.

Consider the greenhouse gases, CF2Cl2 and CH2CF2.  These have the following properties: CF2Cl2:  ΔGfo = -491 kJ/mol, atmospheric lifetime = 102 years, ozone depletion potential = 0.73 CH2CF2:  ΔGfo = -451 kJ/mol, atmospheric lifetime = 5.4 years, ozone depletion potential = 0.0 Clearly, CH2CF2 is less hazardous in the atmosphere than CF2Cl2.  Is it thermodynamically favorable under standard conditions to react CF2Cl2 with H2 gas to convert it to CH2CF2?  (ΔGfo = 0 for H2 and Cl2) CF2Cl2 +  H2 ⇌  CH2CF2 +  Cl2 Justify your answer and calculate the equilibrium constant for this reaction.

EBK A SMALL SCALE APPROACH TO ORGANIC L
EBK A SMALL SCALE APPROACH TO ORGANIC L
4th Edition
ISBN:9781305446021
Author:Lampman
Publisher:Lampman
Chapter26: Biodiesel
Section: Chapter Questions
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Consider the greenhouse gases, CF2Cl2 and CH2CF2.  These have the following properties:

  • CF2Cl2:  ΔGfo = -491 kJ/mol, atmospheric lifetime = 102 years, ozone depletion potential = 0.73
  • CH2CF2:  ΔGfo = -451 kJ/mol, atmospheric lifetime = 5.4 years, ozone depletion potential = 0.0

Clearly, CH2CF2 is less hazardous in the atmosphere than CF2Cl2.  Is it thermodynamically favorable under standard conditions to react CF2Cl2 with H2 gas to convert it to CH2CF2?  (ΔGfo = 0 for H2 and Cl2)

CF2Cl2 +  H2 ⇌  CH2CF2 +  Cl2

Justify your answer and calculate the equilibrium constant for this reaction.

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