hi, i was just wondering what the positive test for a carbonyl compound would be
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a level chemistry help! carbonyl compunds watch
- Thread Starter
- 04-07-2004 11:56
- 04-07-2004 13:07
using 2 4 dinitrophenylhydrazine solution ... forms a yellow or orange precipitate with carbonyl compounds ...
i dont think with carboxylic acids though .... for tht u use sodium bicarbonate .... forms C02 gas
- 05-07-2004 18:20
yea it forms a orange preciptiate only with ketones and aldehydes but not with carb acids because the coh bit causes some kind of dipole or something to the double bond
isnt a level chemistry all finished now?