Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta

What is the effect of bromine being concentrated or dilute when added to cyclohexene? watch

    • Thread Starter
    Offline

    13
    ReputationRep:
    Is there any difference when it is dilute/concentrated does that affect anything.

    I know that in cyclohexene the double bond will break, and the br2 will decolourise.
    Offline

    19
    ReputationRep:
    dunno tbh :/

    Maybe the colour change since conc bromine water is darker?
    or the rate of reaction since conc will have more Bromine in it?
    Offline

    17
    ReputationRep:
    Only the intensity of the colours.

    At the extreme end, you could add sooo much Br2 that the cyclohexene becomes the limiting reagent and you wouldn't see the decolourisation.
    • Community Assistant
    • Study Helper
    Offline

    17
    ReputationRep:
    Community Assistant
    Study Helper
    (Original post by Mihael_Keehl)
    Is there any difference when it is dilute/concentrated does that affect anything.

    I know that in cyclohexene the double bond will break, and the br2 will decolourise.
    In aqueous solution the bromine adds as BrOH making a bromoalcohol. This is because bromine reacts with water in an equilibrium:

    Br2 + H2O <==> BrOH + HBr

    And BrOH is a better electrophile than Br2
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: January 29, 2016
Poll
Do I go to The Streets tomorrow night?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.