Logged out
Access All our Essays in an Instant
Swap your work for FREE access, or pay £4.99 for instant access
An Experiment To Identify A Series Of Liquids
Member rating: No Rating | Words: 1173 | Submitted: Wed Dec 05 2007
Page Preview
On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:
BACKGROUND THEORY ALKENES The alkene in this set of liquids is cyclohexene. It has the structural formula of CH2CHCHCH2CH2CH2. It has an intense, sharp smell. The test for alkenes is the addition of bromine water. In the event of an alkene being present, the bromine water, which is normally an orange-brown colour, will decolourise to leave a clear halogenoalkane. In this case, the halogenoalkane formed will be 1,2 - dibromocyclohexane. The reaction is electrophilic addition or in this case, halogenation. Equation: CH2CHCHCH2CH2CH2 + Br2 ==> CH2CHBrCHBrCH2CH2CH2 Cyclohexene bromine 1,2 - dibromocyclohexene HALOGENOALKANES Bromoethane is the halogenoalkane in the set of liquids given. It is also known as ethyl bromide, and has an ether-like smell. Its structural formula is CH2CH2Br. The test for halogenoalkanes is to add aqueous sodium hydroxide, then warm with ethanolic silver nitrate solution. If there is a halogenoalkane present, a precipitate of silver bromide will be formed. In the case of bromide ions, a cream precipitate will...
Get instant access
- Instant, unlimited access to our documents in full
- Swap your work for free access, or pay £4.99
- To see the full version of this document and 146,871 others
Receive email updates for this category
- Simply tell us your email address and receive a weekly Study Help Email for FREE
- Receive 3 FREE essay views with each email
- Get all the latest essays from Coursework.Info & discussion from TheStudentRoom.co.uk
