Could you suggest me some website (if any you know)?
I am a 10+2 student and I want to do the chemistry practicals for acetone, ethanol , formaldehyde , glucose , glycerine , aniline , phenol .
2006-12-16 04:08:37 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
remember i am only limited to testing in the test tubes using different chemicals
2006-12-16 04:30:15 · update #1
You can test for carbohydrates through several colorometric reagents. For the others, I'd recommend IR and/or Mass Spectroscopy.
2006-12-16 04:18:51 · answer #1 · answered by Bruce 2 · 0⤊ 0⤋
Acetone Lab Test
2016-10-16 06:56:07 · answer #2 · answered by Anonymous · 0⤊ 0⤋
There isn't a specific chemical test for propanone as such, but there are two experiments that you could do to confirm you had a ketone.
1. Add 2,4-dinitrophenylhydrazine. This will give an orange precipitate with aldehydes or ketones.
2. Add acidified potassium dichromate to a fresh sample and warm it. The colour will stay orange, showing that you didn't have an aldehyde (with which the colour would have turned green).
2006-12-16 05:26:50 · answer #3 · answered by Gervald F 7 · 0⤊ 0⤋
most lab books have sections on organic reactions. to ID acetone do the iodoform test with I2 and sodium hydroxide. you'll get a yellow precipitate. the rest look up functional group tests and you'll be fine
2006-12-16 06:34:08 · answer #4 · answered by shiara_blade 6 · 0⤊ 0⤋
The general test for methyl ketones (of which acetone is one) is the Iodoform test. I2/KI solution is added to the ketone, which is then treated with NaOH, and HCCl3 (iodoform) precipitiates out. Works every time.
For more info, google or wiki "Iodoform reaction"
2006-12-16 06:20:40 · answer #5 · answered by Glenguin 7 · 0⤊ 0⤋