ethanol with potassium permanganate?

Question

i placed 1 ml dilute potassium permangate ina clean test tube. i added 2 drops of ethanol. i warm gently in a water bath.. what would be the result after 5 minutes?

Answer 1

In the absence of any dilute acid, there would be a brown precipitate of manganese(IV) oxide, and a smell of vinegar. This shows that the KMnO4 oxidised the ethanol. If you had added a bit of dilute H2SO4 as well, the contents would have gone colourless.



The previous answerer's equation is wrong, by the way.

Answer 2

Ethanol Kmno4

Answer 3

For the best answers, search on this site https://shorturl.im/axxb4



KMnO4 is strong oxidizing agent. Mixing KMnO4 with pure glycerol or other simple alcohols (like ethanol) ends with a combustion reaction (violent). In organic chemistry, KMnO4 is used to make cis-diols (dialcohols) from alkenes. After the reaction, MnO2 precipitates out.

Answer 4

It took me a bit of time to work out this equation:

3 C2H5OH + 4 KMnO4 -> 3 HC2H3O2 + 4 MnO2 + 4 KOH + H2O



Reactants

C2H5OH is ethanol, KMnO4 is potassium permaganate



Products

HC2H3O2 is acetic acid (vinegar), MnO2 is manganese oxide, KOH is potassium hydroxide, H2O is water.



I am not so sure about the color though out of the products, only manganese oxide has color, KOH, H2O, HC2H3O2 are colorless, so if you want to know the final color of the solution, search for the color of aqueous manganese oxide

Answer 5

why we use KMnO4 test for Alcohol analysis.