Alkanes & Alkenes

Question 1

Alkene + HX->

Answer 1

Haloalkane

Question 2

alkene +X2

Answer 2

dihaloalkane

Question 3

alkene ->alkane

Answer 3

+H2, hydrogenation, Ni, 100°C, 150atm

Question 4

alkene->alcohol

Answer 4

+H2O, hydration, conc.H3PO4, 300°C, 67atm

Question 5

alkene-> polymer

Answer 5

addition polymerisation, catalyst, 150°C, 2000-3000atm

Question 6

Free radical substitution of alkanes

Answer 6

1)Initiation-Cl2->2Cl• (UV light) 2)Propagation-Cl•+CH4->CH3•+HCl,Cl2+CH3•->CH3Cl+Cl• 3)Termination-Cl•+Cl•->Cl2 etc…

Question 7

Homologous series

Answer 7

Same general formula
Same functional group
Each successive one differs by a CH2 group
Same chemical properties
Trend in physical properties