Slide 1 : Catalyst (broken clay pot or aluminium oxide (Al2O3) Decane
(what is the formula?______________) water Narender_upa@rediffmail.com
Slide 2 : Decane
(what is the formula?______________)
What is the Structural formula - Draw in your jotter)
Slide 3 : Decane
Draw 4 isomers of decane
Slide 4 : When we “crack” DECANE what are the possible products formed? How do you prove you have formed these products? H
Annapurna : Annapurna
Slide 6 : Pentene
CH3CH2CH2CH=CH2 Alkenes Can be Hydrocarbons Saturated
(Single Bonds) Can be Unsaturated
(Double Bond) Ethene
CH2=CH2 Alkanes Cycloalkanes
Slide 7 :
Saturated or Unsaturated? : Saturated or Unsaturated? CH2CHCH3 Saturated Saturated Saturated Unsaturated Unsaturated
Bromine Water : Bromine Water Br Br Double Bonds
Undergo
Addition Reactions In Addition Reactions
The double bond
Breaks and bromine atoms
are added to both sides
of the double bond
Addition of Hydrogen (H2) : Addition of Hydrogen (H2) H H The double bond
Breaks and Hydrogen atoms
are added to both sides
of the double bond Propene + Hydrogen Propane
Alkenes into Alkanes : Alkenes into Alkanes Hexene + Hydrogen C6H12 H2 + Hexane C6H14 Now write this reactions using the Structural Formulae 1.
Alkenes into Alkanes : Alkenes into Alkanes Octene + Hydrogen Octane C8H16 H2 + C8H18 2.
Saturated? : Saturated? C2H6 C4H10 C20H42 C10H20 C15H30 C8H18 C7H14 C60H122 C11H22 ? ? ? ? C4H8 ?
Alkenes and Cycloalkanes : Alkenes and Cycloalkanes Isomers from different Homologous Series CnH2n Alkenes Cyclo-
alkanes Unsaturated Saturated C4H8 C4H8
Slide 15 : Butene Cyclobutane Unsaturated Saturated Reacts with
Bromine Unreactive
No Reaction with
Bromine
C5H10 : C5H10 Describe how you could find out, which test tube contained pentene and which test tube contained cyclopentane A B Pentene Cyclopentane Only Tube A decolourised bromine water.
Bromine Water : Bromine Water Alkenes react with Bromine water.
The bromine water changes from brown to clear.
Tube A must contain Pentene Alkene Bromine Water Alkane
Slide 18 :