2007-03-22 01:16:35 · 0 answers · asked by i-sena 1 in Science & Mathematics ➔ Chemistry
alkanes are very stable and and doesnt contain any unsaturation.hence they are not oxidised by baeyers reagent.
baeyers reagent oxidises by attacking the double bond.
2007-03-22 02:07:10 · answer #1 · answered by dudeofanythingrad 1 · 0⤊ 0⤋
The Baeyer's Test uses potassium permanganate (an powerful oxidizing agent) to indicate unsaturation (has double or triple bonds. Alkanes do not react with potassium permanganate since they are saturated hydrocarbons and not an unsaturated one. KMnO4 oxidizes alkenes producing alakanediols or alkynes producing diones. The appearance of a brown precipitate (MnO2) indicates the oxidation of the organic compound and often indicates the presence of unsaturation found in alkenes and alkynes. However, the unsaturation of aromatic structures cannot be detected using Baeyer Test because aromaticity defies such mild oxidative processes. Other organic compounds that are easily oxidized can also yield a positive result (positive to unsaturation).
2007-03-22 01:28:14 · answer #2 · answered by TheGreatThinker 2 · 1⤊ 0⤋
RE:
why alkanes do not react with potassium manganate (KMnO4) in Baeyer Test?
2015-08-02 00:29:38 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Potassium Permanganate Test
2016-10-04 22:47:32 · answer #4 · answered by schueler 4 · 0⤊ 0⤋
The KMnO4 reacts with unsaturated hydrocarbons like: alkenes, alkynes. KMnO4 oxidize the carbon-carbon double or triple bond.
Alkanes do not contain double or triple bonds so can't react with KMnO4.
Aromatic hydrocarbon's (benzene or toluene) double bonds also do not react like alkene double bonds because they belong to the aromatic bond family, which is not alkene-like.
2007-03-22 01:36:28 · answer #5 · answered by Technology 1 · 3⤊ 0⤋