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Uploaded bySandeep Ambore
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Solubility 3: Solvation & Association

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.

Health & Medicine◦
SOLUBILITY – 3 SOLVATION & ASSOCIATION Presented By: Mr. S.M. Ambore Asst. Professor, DK Patil Institute of Pharmacy, Loha. Nanded
LEARNING OUTCOMES…. Solvation Association Factors affecting Solvation & Association Factors affecting Solubility 2
3 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
SOLVATION FOR IONS 4
5 SOLVATION FOR IONS
6 DKPatilInstituteofPharmacy SOLVATION FOR MOLECULES
7 DKPatilInstituteofPharmacy FACTORS AFFECTING SOLVATION Factors Affecting Solvation Surface area (α) Agitation/ stirring (α) Temperature (depends)
 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. 8 DKPatilInstituteofPharmacy ASSOCIATION
9 DKPatilInstituteofPharmacy TYPES OF ION PAIR A < B < C
10 Factors Affecting Association Magnitude of Electric Charge Dielectric Constant Distance between Charges FACTORS AFFECTING ASSOCIATION
REFLECTION SPOT Can you guess what will be the factors affecting Solubility? 11
12 Nature of Solute/Solvent Surface area Temperature Pressure pH FACTORS AFFECTING SOLUBILITY
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