Although it seems as if free radical chemistry is of essential but limited use in organic chemistry, it is nonetheless quite important in the chemistry of the upper atmosphere as explains the major role of the chlorofluorocarbons in the degradation of the ozone layer. Because of reduced gravity, the partial pressure in the upper atmosphere (stratosphere), where the ozone layer lives, molecules that arrive in this region of the atmosphere are subject to intense ultraviolet radiation, which, as you have learned, is in the region of the electromagnetic spectrum for electronic transitions in organic molecules. Equations and physical constants you will need: Avogadro's Number: 6.022•1023 mol-1 1 m = 109 nm Planck Equation: E = by Frequency wavelength conversion: dx = c Speed of light: c = 3 •10° m:sec Planck Constant: h = 6.626 •10-34 Jesea Ozone (O3) is created when normal oxygen (O2) is irradiated with high enough energy light to break the normal O=O double bond. If the strength of the O=O bond in O2 is 498 kJ/mol, what is the wavelength (A) and region of the required light (pick from the following table)? Region Wavelength (nm) X-Ray and higher <100 UV-C 100–280 UV-B 320-280 UV-A 400-320 Visible (Violet-Red) 400–700 IR 700–1000
Although it seems as if free radical chemistry is of essential but limited use in organic chemistry, it is nonetheless quite important in the chemistry of the upper atmosphere as explains the major role of the chlorofluorocarbons in the degradation of the ozone layer. Because of reduced gravity, the partial pressure in the upper atmosphere (stratosphere), where the ozone layer lives, molecules that arrive in this region of the atmosphere are subject to intense ultraviolet radiation, which, as you have learned, is in the region of the electromagnetic spectrum for electronic transitions in organic molecules. Equations and physical constants you will need: Avogadro's Number: 6.022•1023 mol-1 1 m = 109 nm Planck Equation: E = by Frequency wavelength conversion: dx = c Speed of light: c = 3 •10° m:sec Planck Constant: h = 6.626 •10-34 Jesea Ozone (O3) is created when normal oxygen (O2) is irradiated with high enough energy light to break the normal O=O double bond. If the strength of the O=O bond in O2 is 498 kJ/mol, what is the wavelength (A) and region of the required light (pick from the following table)? Region Wavelength (nm) X-Ray and higher <100 UV-C 100–280 UV-B 320-280 UV-A 400-320 Visible (Violet-Red) 400–700 IR 700–1000
Chapter1: Lewis Structures
Section: Chapter Questions
Problem 68EQ
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Transcribed Image Text:Although it seems as if free radical chemistry is of essential but limited use in organic
chemistry, it is nonetheless quite important in the chemistry of the upper atmosphere as
explains the major role of the chlorofluorocarbons in the degradation of the ozone layer.
Because of reduced gravity, the partial pressure in the upper atmosphere
(stratosphere), where the ozone layer lives, molecules that arrive in this region of the
atmosphere are subject to intense ultraviolet radiation, which, as you have learned, is in
the region of the electromagnetic spectrum for electronic transitions in organic
molecules. Equations and physical constants you will need:
Avogadro's Number: 6.022.1023 mol-1
1 m = 109 nm
Planck Equation: E = by,
Frequency wavelength conversion: = c
Planck Constant: h = 6.626 •10-34 Josec
-1
Speed of light: c = 3 •108
Ozone (O3) is created when normal oxygen (O2) is irradiated with high enough energy
light to break the normal O=O double bond. If the strength of the O=O bond in O2 is 498
kJ/mol, what is the wavelength (1) and region of the required light (pick from the
following table)?
Region
Wavelength (nm)
X-Ray and higher
<100
UV-C
100-280
UV-B
320-280
UV-A
400-320
Visible (Violet-Red)
400–700
IR
700–1000
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