How do you test for alkenes and alkanes?

Mix with bromine water (orange), if a double bond is present (alkenes) then the bromine water will be decolourised.

EP
Answered by Elizabeth P. Chemistry tutor

5427 Views

See similar Chemistry GCSE tutors

Related Chemistry GCSE answers

All answers ▸

a) State the electronic configuration of a chlorine atom. b) Describe the bonding and the phase of chlorine at room temperature.


How is crude oil separated into fractions?


Chlorine reacts with potassium bromide to form potassium chloride and bromine. In this reaction chlorine forms chloride ions: Cl2 + 2KBr --> 2KCl + Br2. Explain, using the equation, how you know that chlorine has been reduced.


The same mass of large, medium and small marbles where reacted separately with diluted HCl. This is and exothermic reaction. Will the rise in temperature for each reaction differ? If yes than why?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning