| Heat of Solutions |
Heat of solutions
Heat of solutions relates to a process in which one mole of solute is
dissolved in an infinitely large quantity of solvent.
Table 11
| Heat of solution is the net
energy required to break apart solute-solute (crystal lattice H
positive) and solvent-solvent attraction or bonds and the energy
released by the formation of new solute-solvent bond ( heat of
hydration; H negative ). |
|
Example: Substance |
Lattice
Energy
Kcal/mol |
Heat of
Hydration
Kcal/mol |
Heat of
Solution
Kcal/mol |
|
KC1 |
+ 167.6 |
- 163.5 |
+ 4.1 |
|
AgF |
+ 217.7 |
- 222.6 |
- 4.9 |
|
