Bond dissosication energy question

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SUMMARY

The discussion focuses on calculating the bond dissociation energy (BDE) for the K+Br- ionic bond using its bond length. The participant expresses difficulty in applying the equation D0 = De - 0.5hω due to the unknown vibrational frequency (ω) and dissociation energy (De). They suggest that an inorganic chemistry approach, specifically the Born-Haber cycle, may provide a solution by calculating energy based solely on electrostatic attraction, given the known charges and initial distance between the ions.

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  • Understanding of bond dissociation energy concepts
  • Familiarity with the Born-Haber cycle in ionic compounds
  • Knowledge of electrostatic forces between charged particles
  • Basic principles of vibrational frequency in molecular bonds
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  • Research the Born-Haber cycle for calculating lattice energy in ionic compounds
  • Study the relationship between bond length and bond dissociation energy
  • Learn about vibrational frequency (ω) and its role in molecular bonding
  • Explore methods for calculating bond energies using electrostatic models
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Chemistry students, inorganic chemists, and researchers interested in bond energy calculations and ionic compound properties.

cake_is_a_lie
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Hello,
How can I calculate the bond dissociation energy for K+Br- when I only know the the length of the bond?
Equation D0 = De - 0.5hω does not help because I do not know ω and De. ω is the vibrational frequency of the bond.
Thank you for your advice beforehand.
 
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isn't there an inorganic chemistry way to this.
I'm not really sure but i do remember finding energy of NaCl by i guess born haber cycle
 
If you assume its a purely ionic bond, you can calculate its energy just from electrostatic attraction. You know the initial distance, you known charges, just move atoms to infinity.
 

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