An unsaturated Hydrocarbon (alkene) has at least one double bonded c=c. Saturated it becomes c-c. No double bonds are allowed in a "saturated" hydrocarbon. Bromine water (reddish brown), contains Br2. Br2 actively attacks a c=c bond forming a c-c bond destroying the reddish brown Br2 and turning the Br2 water solutioncolorless. The fact that there IS a color change would mean double bonds are present; and the sample is an Alkene. No color change, with Bromine water, would indicate an Alkane present.
No comments:
Post a Comment