alkenes reacting with kmn04

[winnie101]

could someone please explain to me the reactions of primary, secondary, and tertiary alkenes with kmno4, in like simple terms. with the products. this is wat i know primary give carbon dioxide, secondary gives acid, tertiary gives ketone, but then my teacher also said that if u consider the double bond to be broken then a primary gives acid, secondary gives ketone, and tertiary doesnt react. if u didnt get wat i mean the just ignore and plz simply tell me the reactions, Thanks

[cashem'up]

this is in very SIMPLE terms....hope it makes sense
we have lets say

C₂H₄ now the double bond is  broken as it is oxidised(loss of electrons).....so wat do we have two Carbon Intermediates of CH₂....which is not bonded to any other C..Now its simple this one will form CO₂........

However if we have propene C₃H₆ then we have C₂H₄ and CH₂ intermediates.........now this is IMPORTANT since in C₂H₄  the C is bonded with another C it is primary and will thus form aldehyde or when fully oxidised carboxylic acid........same thing u apply with a secondary......

got it