Fundamental Organic Chemistry
Fundamental Organic Chemistry
Fundamental Organic Chemistry
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
DI CARBOXYLIC ACID<br />
1-Oxalic acid<br />
COOH<br />
COOH<br />
Oxalic acid is a colorless crystalline solid freely soluble in water and<br />
alcohol, it undergo pyrolysis without charring up on heating .<br />
Test Observation Result<br />
1-Acidity test :<br />
0.25gm of acid +1ml of NaHCO 3<br />
solution .<br />
CO 2 evolves with<br />
effervescence<br />
The compound from<br />
carboxylic acid.<br />
2-Ferric chloride test :<br />
1ml of N.S. + drops of FeCl 3 . No change for FeCl 3<br />
color<br />
Oxalic or tartaric or citric<br />
acid.<br />
3-Calcium chloride test :<br />
1ml of N.S. of acid +1ml of CaCl 2 White ppt. on cold The ppt. is calcium oxalate<br />
specific test for oxalic acid<br />
4-Silver nitrate test:<br />
1ml of N.S. of acids +2ml of silver White ppt. dissolve The ppt. is silver oxalate.<br />
nitrate AgNO 3 .<br />
in ammonia and<br />
HNO 3 acid<br />
5- potassium Permanganate test:<br />
1ml of warm acid + drops of<br />
KMnO 4 .<br />
The color of<br />
KMnO 4 disappear<br />
Oxidation for oxalic acid.<br />
66
Change language