How to Calculate Ionization Energy for Hydrogen Molecules in KJ/mol

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SUMMARY

The discussion focuses on calculating the ionization energy of hydrogen molecules using the formula E=-2.178E-18(z squared/n squared). Participants clarify that the ionization energy per mole is derived from the energy of a single hydrogen atom, specifically at the first energy level (n=1) with z=1. The correct approach involves converting the energy from Joules to kilojoules and considering Avogadro's number to find the total energy for one mole of hydrogen atoms.

PREREQUISITES
  • Understanding of quantum mechanics and atomic structure
  • Familiarity with the concept of ionization energy
  • Basic knowledge of energy units (Joules and kilojoules)
  • Awareness of Avogadro's number and its application in mole calculations
NEXT STEPS
  • Learn how to apply the formula E=-2.178E-18(z squared/n squared) for different elements
  • Research the concept of ionization energy trends across the periodic table
  • Study the conversion between Joules and kilojoules in chemical calculations
  • Explore the significance of Avogadro's number in stoichiometric calculations
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Chemistry students, educators, and researchers interested in atomic physics and energy calculations related to ionization processes.

antiflag403
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PLEASE HELP! Ionization Energy Question

Hello everyone,
I am having some trouble with this question. If one of you could point me in the right direction i would be really grateful.

1. Since the ionization process takes an electron from its ground state to the zero level of the energy scale, the ground state engery calculated for the electron of the hyrdrogen atom can be compared to the negative of its ionization engery. Use the equation E=-2.178E-18(z squared/n squared), for the energy of a valence level n to build an equation that can be used to calculate ionization energy of hydrogen in KJ/mol.

I would assume that the ionization energy per mole would just be equal to the negative value of the first energy level divided by the number of moles but this is wrong.
Any help would be GREATLY appreciated. Thanks
 
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Plugging in z=1, n=1, you can find the IE of a single H-atom in Joules. How many H-atoms in a mole ? How many joules in a kilojoule ?
 
OK. that makes some sense Gokul. Thanks a lot for the help!
 

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