The stratospheric ozone 1O32 layer helps to protect usfrom harmful ultraviolet radiation. It does so by absorbingultraviolet light and falling apart into an O2 molecule and anoxygen atom, a process known as photodissociation.O31g2¡O21g2 + O1g2Use the data in Appendix C to calculate the enthalpy changefor this reaction. What is the maximum wavelength a photoncan have if it is to possess sufficient energy to cause thisdissociation? In what portion of the spectrum does thiswavelength occur?

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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The stratospheric ozone 1O32 layer helps to protect us
from harmful ultraviolet radiation. It does so by absorbing
ultraviolet light and falling apart into an O2 molecule and an
oxygen atom, a process known as photodissociation.
O31g2¡O21g2 + O1g2
Use the data in Appendix C to calculate the enthalpy change
for this reaction. What is the maximum wavelength a photon
can have if it is to possess sufficient energy to cause this
dissociation? In what portion of the spectrum does this
wavelength occur?

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