Lecture notes
A Level Chemistry CIE Topical Notes
Benzene, Analytical techniques, Chemical energetics, Electrochemistry, Chemistry A Level, CIE, Carboxylic Acids and Acyl chlorides
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Benzene-
benzene ring :
nexagon 16 carbon droms)
I
Found in medicine , byes & plastics
d organic hydrocarbons with benzene rings -> avenes / aryl / aromatic compounds
H
I
planar
& It -
C -
- - H
-
simplest structure :
I C C
Double bond moving I
Ikekule's structures
/ I I
I pibond &
=- because , overlap
#
C6H6 it
* petrol has aromatic properties -> bensin (from benzenes Denzene -> arene functional group
* LPG (liquidified Petroleum gas)
-
perfectly symmetrical molecule
Kekule's structure
Inaccurate
-
planar
-
all c-c bond same length because e-delocalised ,
C--bond same energy ,
can't break down
-
doesn't have chemical properties of that in alkenes
↳ + Bre requires additional conditions (not at r t )
.
.
-
Each Carbon in nexagonal ring is sp2 hybridised bonded to 3 atoms , requires s pp hybridisation
-
Each carbon atoms form 3 sigma bonds
-
Each Carbon contribute one e-to a bi bond anddelocalised over all six carbon dioms in nexagonal ring
·
8
8-
a
T
↓
,
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