Polymer Revolution

Question 1

Allene with 2 c=c bonds

Answer 1

Diene eg hexa-1,3-diene

Question 2

Bond angle around C=C is always

Answer 2

120

Question 3

Electrophile definition

Answer 3

Either positive ions or molecules with a partial positive charge on one of the atoms. When they react they accept a pair of electrons.

Question 4

Alkenes undergo what form of addition

Answer 4

Electrophiilic

Question 5

Test for Alkenes

Answer 5

Bromine –> red-brown to colorless

Question 6

Br2(l) and alkene

Answer 6

Room temp and pressure alkene+2Br

Question 7

Br2(aq) & alkene

Answer 7

Room temp and pressure and alcohol

Br attach and oh attach leaving HBr

Question 8

HBr (aq) and alkene

Answer 8

Aq solution room temp and pressure H &Br join =alkane

Question 9

H2O and alkene

Answer 9

Alcohol phosphoric acid/silica at 300 degrees/60atm or with conc. H2SO4 then H2O at 1 arm

Question 10

H2 and alkene

Answer 10

Alkane apt catalyst, room temp and pressure or nickel catalyst at 150 degrees/ 5 atm

Question 11

Chain lengths affect on polymer

Answer 11

Tensile strength- measure of how much force needs to be applied before a polymer snaps.
Increase Cl increases tensile as longer chains- more entangled
Longer chains have stronger intermolecular bonds between them so stranger to pull apart