Topic 6

Question 1

Stereoisomer

Answer 1

-same structural formula
-diff arrangement in space

Question 1

Fractional distillation

Answer 1

-Diff boiling point
-due to diff chain length

Question 2

Free radical substitution

Answer 2

homiletic bond fission, free radicals

Question 3

Alcohol bp

Answer 3

-oh groups form hydrogen bond
-more E needed

Question 4

Cracking

Answer 4

-release short chain alkane and alkene
-demand increased

Question 5

Isomers

Answer 5

-branched chains
-low sa/less point of contact
-weaker London forces so less e needed

Question 6

catalytic converter

Answer 6

2NO+2CO->N2+2CO2

Question 7

cynide reaction

Answer 7

useful as increase carbon chain length

Question 8

heating

Answer 8

-increase reaction rate
-sealed so products don’t escape

Question 9

Rate of hydrolysis

Answer 9

-ethanol as solvent
-silver nitrate
-measure time taken for precipitate
-same temp and volume of halogen

Question 10

How can small UV result in a big product

Answer 10

Radical recycled each time

Question 11

UV and hydrogen

Answer 11

High bond enthalpy for hydrogen so radical not formed as UV not strong enough

Question 12

ethanol

Answer 12

more soluble

Question 13

Incineration

Answer 13

HCl produced
Toxic