تكملة المحاضره السابقه

Calcium acetate
Sodium benzoate
CH2—CH2—C—OK Pottasuim2,3-Dibromo propanoate
Br Br O

Physical Properties
Carboxylic acid molecule is polar and can form hydrogen bonds with each other and with other kinds of molecules.
The aliphatic acid with 4 or lees Catoms are miscible with water A 5 C party soluble and the higher are Insoluble.
Carboxylic acids are soluble In non polar or lees polar solvents like Ether Alcohol , Benzene.
These very high Boiling points are due to the fact that the pair of carboxylic acid molecules are held together by two hydrogen bonds

The odors of lower aliphatic acid sharp and higher acid have little odor because of their low volatility.
SALTS OF CARB. ACIDS
RCOOH + NaOH R—C—ONa + H2O
In soluble in water O soluble in water