This document discusses solubility, solvation, and association. It defines solvation as the interaction between solute and solvent molecules, with hydration referring specifically to water as the solvent. Solvation of ions involves electrostatic interactions, while solvation of molecules involves weaker intermolecular forces. Factors that affect solvation include surface area, agitation, and temperature. Association refers to the joining of oppositely charged ions and is explained by Coulomb's law. Factors that impact association include the magnitude of electric charges, dielectric constant, and distance between charges. The key factors affecting solubility are outlined as the nature of solute and solvent, surface area, temperature, pressure, and pH.

1. SOLUBILITY – 3
SOLVATION & ASSOCIATION
Presented By:
Mr. S.M. Ambore
Asst. Professor,
DK Patil Institute of Pharmacy, Loha. Nanded

2. LEARNING OUTCOMES….
Solvation
Association
Factors affecting Solvation
& Association
Factors affecting Solubility 2

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1. It is Solute- Solvent interaction.
2. Due to Solvation solute gets stabilized in solution.
3. When water is used as a solvent for solvation, then process
is called as HYDRATION.
4. Unit of solvation is mol / sec.
SOLVATION

4. SOLVATION FOR IONS
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SOLVATION FOR IONS

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SOLVATION FOR MOLECULES

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FACTORS AFFECTING SOLVATION
Factors
Affecting
Solvation
Surface area
(α)
Agitation/
stirring (α)
Temperature
(depends)

8.  It is the phenomena in which oppositely charged ions
comes together in a solution and forms a different
chemical entity.
 It is joining or addition of ions.
 It is well explained by Coulomb's Law.
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ASSOCIATION

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TYPES OF ION PAIR
A < B < C

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Factors
Affecting
Association
Magnitude
of Electric
Charge
Dielectric
Constant
Distance
between
Charges
FACTORS AFFECTING ASSOCIATION

11. REFLECTION SPOT
Can you guess what will be the factors affecting
Solubility?
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Nature of
Solute/Solvent
Surface area
Temperature
Pressure
pH
FACTORS AFFECTING SOLUBILITY

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