The document discusses solubility and solutions. It aims to help students understand terms related to solubility such as solute, solvent, saturated solution, unsaturated solution, and supersaturated solution. Specifically, it defines solubility as the ability of one substance to dissolve in another under specified conditions. It also defines a solution as a homogeneous mixture of two or more components and describes saturated, unsaturated, and supersaturated solutions based on the concentration of solute they contain.

1. Sojar college of Pharmacy,
Khandvi
S.Y.B.Pharm
SEM:III
Physical Pharmaceutics-I
Solubility & Solution
Presented by
Mr. S.D. Modekar

2. Solubility & solutions
Objectives
After completion of this topic, the student should be able to:
Understand the terms of solubility.
Solubility of substances in solutions & various types of solutions.

3. Solubility
solubility is the ability of one substance to fully dissolve in another
substance under specified condition.
Solute is the dissolved agent. (less part of the
solution )
Solvent is the component in which the solute is
dissolved (more part of the solution).

4. Solubility
In a quantitative way: it is the concentration of solute in a saturated solution at
a certain temperature.
In a qualitative way: it is the spontaneous interaction of two or more
substances (solute & solvent) to form a homogeneous molecular dispersion

5. Solution
is a mixture of two or more components that form a homogenous mixture.

6. Saturated solution:
A solution that contains the maximum amount of solute at a definite temperature
Unsaturated solution: is one containing the dissolved solute in a concentration
below that necessary for complete saturation at a definite temperature.
Supersaturated solution: contains more of the dissolved solute than it would
normally contain in a saturated state at a definite temperature