Please enable JavaScript.
Coggle requires JavaScript to display documents.
Physical Properties - Coggle Diagram
Physical Properties
:three: Solubility
The extend to which a compound (solute), dissolves in a liquid (solvent).
-
To dissolve ionic compound, :arrow_up: ion-ion interactions must be replaced by :arrow_up: weaker ion-dipole interactions
Polar compounds dissolve in polar solvents, vice versa.
-
-
:black_small_square: soluble (ethanol), :black_medium_small_square: insoluble (cholestrol)
Hydrophobic: nonpolar, not attracted to H2O
Hydrophilic: polar, attracted to H2O
:two: Melting point
-
-
:arrow_up: intermolecular forces, :arrow_up: melting point
-
Ionic compounds held together extremely :arrow_up: interactions, :arrow_up:: melting point
Covalent molecules, Melting point depends to the functional group.
Example: 1. pentane (mp -130 C) 2. butanal (mp -96 C) 3. 1-butanol (mp -90 C) :star: :arrow_up: intermolecular forces
Symmetry molecule: similar molecular weight, different shape
neopentane (mp -17 C) :arrow_up: symmetrical molecule, :arrow_up: melting point
isopentane (mp -160C) :arrow_down: symmetrical molecule, :arrow_down: melting point
:one: Boiling point :
-
-
:arrow_up: intermolecular forces, :arrow_up: boiling point
Example:1. pentane (bp 36 C), 2. butanal (bp 76 C), 3. 1-butanol (bp 118 C) :star: :arrow_up: intermolecular forces
-
Schematic of distillation apparatus