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10 Cards in this Set
- Front
- Back
Ideal solution |
A solution whose collective properties are proportional to the concentration of the solutes |
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Non ideal solution |
A solution where ions of opposite or the same charge attract or repel each other due to electric forces. |
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(Thermodynamic) activity |
Is proportional to concentration multiplied by a constant |
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Activity coefficients |
Relate measured ion concentration to thermodynamic activities |
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Activity coefficient depend on |
Nature and ionic strength of solvents and hydrated ion size of individual species |
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Ionic strength |
Expresses the charge concentration in the solution |
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Activity coefficient equations |
Debye-huckel, extended Debye-huckel and davis theories |
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Controls on activity coefficient |
Decreases with ionic strength and increased charge of ion |
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Fugacity |
Equivalent of activity coefficient for gases. |
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Fugacity is determined by |
Multiplying fugacity coefficient by partial pressure |