Unformatted text preview: Average production rate CFC12 = 3.8
T = 102 years,
Hence steady state concentration of CFC12
= ( ⁄ ) (b) Emission of chlorine atoms by CFC11
=( ⁄ ) ⁄ ) Emission of chlorine atoms by CFC12
=( Hence, CFC11 emits more chlorine atoms to the atmosphere
(c) Given that emission continues indefinitely
Steady state mass of chlorine for CFC11 =
Steady state mass of chlorine for CFC12 =
Hence, CFC12 contribute towards more emission of chlorine to the atmosphere at steady state
conditions. 7. In Example 11.8 we computed the steady state mass and concentration of CFC 11
for a constant emission rate of 1.2
g/year throughout the 1960s. We assumed
that the emissions of this compound were zero before 1960. Data show that CPC 11
productio...
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 Spring '13
 TahirHusain
 Steady State, Ozone depletion, Chlorofluorocarbon, CFC

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