Question

http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w04_qp_1.pdf
Q21, Q28, Q39

Answer 1

For 21, if a carbon is attached to 4 different things, then it's chiral

Answer 2

Q23 try to draw them all out, i get 9

Answer 3

i solved 23 but i took alot of time to do it

Answer 4

k cool, 29 only 1. is correct

Answer 5

i mean 39.

Answer 6

Why is option 2 incorrect

Answer 7

is it because all groups attatched to the centre carbon are identical

Answer 8

to do an elimination you need a leaving group on the beta carbon (the carbon beside the alcohol) notice that the central carbon is quaternary, also you wont break the C-C bonds like this.

Answer 9

Do you mean there arent any carbon to remove the hydrogen to form a double because they are alchohol and there is just a centre carbon reaching its octet

Answer 10

double bond*

Answer 11

i mean that in order to make the double bond you'd need to break a C-C bond, which is not going to happen - methanol cations are not stable.

Answer 12

Thank you :)

Answer 13

no problem!