Term
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Definition
the substance being DISSOLVED in the solution
(aka the sugar in a sugar-water solution) |
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Term
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Definition
the substance that is doing the dissolving
(aka the WATER in a sugar-water situation) |
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Term
| Solute vs Solvent: If the solvent &solute are in different phases, Who remains in the same phase after mixing? |
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Definition
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Term
| Solute vs Solvent: If the solvent &solute are in same phases, Who remains in the greater magnitude after mixing? |
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Definition
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Term
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Definition
1. dissolution
2.is the electrostatic interaction btwn the solute & solvent molecules |
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Term
when the new interactions are stronger than the original ones, solvation is
1.( exothermic/endothermic)
2. process is favored at (high/low temps) |
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Definition
1. exothermic
2. low temp
* remember exothermic releases heat and does not need heat |
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Term
when the new interactions are weaker than the original ones, solvation is
1.( exothermic/endothermic)
2. process is favored at (high/low temps) |
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Definition
1.endothermic
2. high temps |
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Term
| an ideal solution has an enthaply (H) of dissolution equal to (#)? |
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Definition
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Term
| why are solid ionic compounds bad conductors of electricity? |
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Definition
| their charged particles are rigidly set in place by the lattice arrangment that allows the compond to be in fact a solid. |
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Term
| why are aqueous ionic compounds good conductors of electricity? |
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Definition
| their lattice formation is disturbed by the ion-dipole interactions btwn the ion components and the water molecules |
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Term
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Definition
ideal behavior in a solution occurs when solute-solute
solvent-solvent
solvent-solute
interactions are VERY SIMILAR.
(aka the compounds in the solution do not repel each other) |
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Term
osomosis of water:
water moves toward the _____ |
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Definition
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Term
| the entropy change that occurs when a solution is formed has a postive or negative value? |
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Definition
a negative value
entrophy is decreased bc the ordering of the molecules is increased. |
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Term
| what factors causes the entropy change that occurs when a solution is formed has to a MORE negative value? |
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Definition
higher charge denisty
(aka 2+ vs -1)
&
(or if comparing identical charges: the smaller size) |
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Term
| what is the effect on the vapor pressure when two components that are against Raoult's Law combine? |
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Definition
vapor pressure increases,
they are having stronger
solute-solute
solvent-solvent interactions
than solute-solvent interactions
=
they are repelling, and want to evaporate
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