Question

Why the colour changes when bromine is added 2 a alkene?

Answer 1

color changes from ---- to -- do u know ?

Answer 2

I know it forms alkane but how

Answer 3

colourless actually

Answer 4

what is color of Br2 do u know ??

Answer 5

orange colur yes i know

Answer 6

yaaa it will be reddish-brown
when u treat with alkene it is no more Br2 but it form Bromo compounds with alkenes and hence turns to colorless

Answer 7

Bromo compounds are colourless?

Answer 8

not all bromo compounds are colorless :) and i can say the color change is dude to decrease of concenteration of Br2 as it is involved in the reaction :) at certain time interval there will not be any Br2 so it looks colorless most of the time

Answer 9

ur welcome :)