- Messages
- 53
- Reaction score
- 9
- Points
- 8
Only some particular forms of KMnO4 oxidise a ketone, and that's not specified in our syllabus. All we were supposed to do was to find if any alkene group was present. There wasn't any present, so there was no reaction. Infact, the last 2 were no reactions.Source : http://www.chemguide.co.uk/organicprops/carbonyls/oxidation.html
4th paragraph from top:
Because ketones don't have that particular hydrogen atom, they are resistant to oxidation. Only very strong oxidising agents like potassium manganate(VII) solution (potassium permanganate solution) oxidise ketones - and they do it in a destructive way, breaking carbon-carbon bonds.
I guess if chemguide says so, it must be reliable.
So the answer to the last part of the table is that it oxidizes the ketone, and the colour change is from purple to colourless