GIVEN DATA : Bond dissociation energy between H-I= 295KJ/mol By using photons of
ID: 796090 • Letter: G
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GIVEN DATA : Bond dissociation energy between H-I= 295KJ/mol
By using photons of specific wavelengths, chemists can dissociate gaseous HI to produce H atoms with accurately known speeds. When HI dissociates, the H atoms move away rapidly, whereas the relatively heavy I atoms move little. Use Table 9.2 in your textbook to answer the following questions:
GIVEN DATA : Bond dissociation energy between H-I= 295KJ/mol By using photons of specific wavelengths, chemists can dissociate gaseous HI to produce H atoms with accurately known speeds. When HI dissociates, the H atoms move away rapidly, whereas the relatively heavy I atoms move little. Use Table 9.2 in your textbook to answer the following questions: What is the longest wavelength (in nm) that can dissociate a molecule of HI? If a photon of 276 nm is used, what is the excess energy (in J) over that needed for the dissociation? If all of this excess energy is carried away by the H atom as kinetic energy, what is its speed (in m/s)?Explanation / Answer
GIVEN DATA : Bond dissociation energy between H-I= 295KJ/mol By using photons of
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