Fundamental Organic Chemistry
Fundamental Organic Chemistry
Fundamental Organic Chemistry
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2- Acetic acid CH 3 COOH<br />
Acetic acid is a colorless liquid, with a penetrating odor of vinegar , miscible with<br />
H 2 O, alcohol and ether . Most of its salts soluble with water except those of Ag,<br />
mercurous and basic salts.<br />
Test Observation Result<br />
1-Acidity test:<br />
1ml of acid + 2ml of NaHCO 3 .<br />
CO 2 evolves with<br />
effervescence.<br />
Acetic acid is carboxylic<br />
acid (28).<br />
CH 3 COOH + NaHCO 3 CH 3 COONa + H 2 O + CO 2<br />
Sodium acetate<br />
…(28)<br />
2-Ferric chloride test :<br />
1ml of N.S. of acid + few drops<br />
of FeCl 3 .<br />
Red color<br />
turn with heating<br />
to brown ppt.<br />
Red color is Ferric acetate<br />
(CH 3 COO) 3 Fe and brown<br />
ppt. is basic ferric acetate<br />
(CH 3 COO) Fe (OH) 2 (29)<br />
3 CH 3<br />
COONH 4 + FeCl 3<br />
(CH 3<br />
COO) 3<br />
Fe + 3NH 4<br />
Cl<br />
(CH 3<br />
COO) 3<br />
Fe<br />
2H 2<br />
O<br />
(CH 3<br />
COO)Fe(OH 2<br />
)<br />
Basic ferric acetate<br />
…(29)<br />
57
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