Dissociation energies of: Cr2Cl3 & Cr2O3 Which is higher?

Thread starter Panthera Leo
Start date May 23, 2011
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Dissociation Energies

In summary, dissociation energy refers to the energy required to break a chemical bond and separate the atoms involved. It is typically measured in units of kilojoules per mole (kJ/mol) using experimental techniques such as spectroscopy or calorimetry. Based on experimental data, Cr2O3 has a higher dissociation energy compared to Cr2Cl3 due to the stronger bond between the two oxygen atoms. This is attributed to the difference in electronegativity between oxygen and chromium atoms. The higher dissociation energy of a bond results in a more stable molecule and makes it less likely to undergo a chemical reaction, as it requires a higher amount of energy to break the bond.

May 23, 2011

Panthera Leo

Hi,

I have been searching the net but couldn't find the dissociation energies of Cr2Cl3 & Cr2O3... Just knowing which is higher will suffice too & is there any other molecule with lower dissociation energy which could lead to Cr3+ ?

Many thanks in advance.

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May 23, 2011

Borek

Mentor

Never heard about Cr₂Cl₃.

1. What is dissociation energy?

Dissociation energy refers to the energy required to break a chemical bond and separate the atoms involved. It is a measure of the strength of a bond.

2. How is dissociation energy measured?

Dissociation energy is typically measured in units of kilojoules per mole (kJ/mol) using various experimental techniques such as spectroscopy or calorimetry.

3. Which has a higher dissociation energy: Cr2Cl3 or Cr2O3?

Based on experimental data, Cr2O3 has a higher dissociation energy compared to Cr2Cl3. This is due to the stronger bond between the two oxygen atoms in Cr2O3 compared to the bond between the two chlorine atoms in Cr2Cl3.

4. Why does Cr2O3 have a higher dissociation energy?

This can be attributed to the difference in electronegativity between oxygen and chromium atoms. Oxygen is more electronegative, meaning it has a stronger pull on the shared electrons in the bond, resulting in a stronger bond and higher dissociation energy.

5. How does dissociation energy affect chemical reactions?

The higher the dissociation energy of a bond, the more stable the molecule is, and therefore, the less likely it is to undergo a chemical reaction. This is because a higher amount of energy is required to break the bond and initiate a reaction.