ch.13 chem
Terms
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- solution
- homogeneous mixture of solutes and solvents
- solvent
- greatest quantity - substance that that does the dissolving
- solute
- substance that is being dissolved - uniformly dispersed
- molecular level
- intermolecular forces b/w solvent and solute must be great enough to compete w/ intermolecular forces w/i solute and solvent independently
- 3 steps of solvation
-
1) seperation of solute molecules, delta H1
2)seperation of solvent molecules, delta H2
3)formation of solvent-solute interactions, delta H3 - spontaneity
- process in which the energy of the system decreases, a decrease in energy due to an increase in the disorder or randomness of your system (solution)
- entropy
- a thermodynamic measure of the amount of disorder in a system - process which increase entropy tend to occur spontaneously
- unsaturated solution
- solution upto the pt. of saturation
- factors affecting solubility
-
1)nature of solute
2)nature of solvent
3)temp
4)pressure (gases)