HARD

Question 1

bromination

Answer 1

Br2/ ALbr3

Question 2

electrophile

Answer 2

electron pair acceptor

Question 3

which is major product secondary or tertiary

Answer 3

carbocation Intermidate is more stable in E (secondary than tertiary)

major formed from secondary carbonation

Question 4

sterisomers

Answer 4

compounds with same structure formula but different arrangement In space

Question 5

forming a pi bond

Answer 5

p orbitals overalp

Question 6

amine and HCl

Answer 6

c- Nh3 + cl-

nitrogen electrop pair accepts a H +

Question 7

why is the repeat polymer biodegradable

Answer 7

ester can be hydrolysed

Question 8

explain the difference in solubitiyy of hexan 1 ol and hexane 1,6 diol

Answer 8

1,6 diol has 2 oh groups

forms more H bond with water

Question 9

primary alcohol oxidised

Answer 9

carboncylix acid or aldehyde

2 (0. v. (0)

+h20 at end

Question 10

test with na2co3

Answer 10

carboxylic acid

Question 11

ph = 5

Answer 11

weak acid

so phenol

Question 12

tollens reagents

Answer 12

tests for aldehyde

Question 13

2,4 DNP

Answer 13

orange PPT

if carbonyl compound

Question 14

homologous series

Answer 14

series of organic compounds with same functional group but with each successive member differing by CH2

Question 15

hetrolytic fission

Answer 15

one bonded atom receives both electrons

breaking of covalent bond

Question 16

explain the use of two deuterated compounds in NMR spectroscopy

Answer 16

D20 - used to identify OH peak and NH peak

CDcl3 - used as a solvent

Question 17

strength of sigma bonds and pi bonds

Answer 17

sigma stronger

Question 18

limitations of radical substitution

Answer 18

1- further substitution

2- mixture of products formed

Question 19

resistance of chlorination with alkene and benzene

Answer 19

1-

ALKENE
electrons are localised

electron density is higher

more susceptible to electrophilic attack

BENZENE
electrons are delocalised

Question 20

alkene + cl2

Answer 20

alkane cl2

Question 21

sigma bonds

Answer 21

overlapping obitals between atoms

Question 22

pi bonds

Answer 22

sideways overlapping p orbitals

Question 23

why cant form sterisomers

Answer 23

c-c cannot rotate

2 groups on one carbon atom are the same

Question 24

why boiling point increases with increase number of repeat units

Answer 24

more points of contact

stronger LF

more energy Required to break IMFS

Question 25

role of oh -

Answer 25

base

Question 26

no colour change in k2cr2o7

Answer 26

ketones or teritary alcohol

Question 27

half life

Answer 27

ln 2 / t1/2

Question 28

ea from graph

Answer 28

gradient = -ea/ r x10 -3

Question 29

gradient is

Answer 29

K

Question 30

y intercpet is

Answer 30

ln a

Question 31

-As

Answer 31

gradient