Na+ & OH- Dissociation: Energy Absorbed yet Heat Liberated

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In summary, the conversation discusses the process of dissociation of Na+ and OH- ions, which initially absorbs energy but ultimately releases heat. It is determined that this is due to the enthalpy of dissolution and the increased order associated with solvation. Both enthalpy and entropy need to be taken into account in this reaction.
  • #1
m0286
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Nevermind!

My heads going crazy when I think about this PLEASE HELP!

In a reaction, Na+ ions are separated from OH- ions, a process of dissociation that absorbs energy, yet, in the end, heat was liberated by the overall process... WHY? :bugeye:
 
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  • #2
Never Mind I Figured It Out Thanks For Looking Though :)
 
  • #3
It may still be instructive (to yourself) and others to post whatever it is that you have figured out.
 
  • #4
enthalpy of dissolution heh? It takes energy to break apart the lattice energy, yet the increased order associated with the solvation suffices for the overall reaction to be exothermic. The one has to take into account both enthalpy and entropical factors.
 

1) What is the process of Na+ and OH- dissociation?

The process of Na+ and OH- dissociation involves breaking the bonds between sodium and hydroxide ions in a compound, resulting in the formation of Na+ and OH- ions. This process is also known as ionization.

2) Why is energy absorbed during Na+ and OH- dissociation?

Energy is absorbed during Na+ and OH- dissociation because breaking the bonds between the ions requires energy. This energy is used to overcome the attractive forces between the ions in the compound.

3) How is heat liberated during Na+ and OH- dissociation?

Heat is liberated during Na+ and OH- dissociation because the energy used to break the bonds between the ions is released as heat when the ions become separated. This heat energy is a result of the decrease in potential energy between the ions.

4) What factors influence the amount of energy absorbed during Na+ and OH- dissociation?

The amount of energy absorbed during Na+ and OH- dissociation is influenced by factors such as the strength of the bonds between the ions, the size of the ions, and the presence of any surrounding molecules that may affect the dissociation process.

5) How does Na+ and OH- dissociation affect the pH of a solution?

Na+ and OH- dissociation has a significant impact on the pH of a solution. When Na+ and OH- ions are formed, they can combine with H+ ions to form water molecules, reducing the concentration of H+ ions in the solution and increasing the pH. This is why compounds containing Na+ and OH- ions are considered strong bases.

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