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Chemistry 15 Online
OpenStudy (abmon98):

http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w07_qp_1.pdf Q19

OpenStudy (somy):

can u draw them first?

OpenStudy (abmon98):

|dw:1401915272259:dw|

OpenStudy (somy):

ok let me check

OpenStudy (somy):

is the answer A?

OpenStudy (abmon98):

nope its B

OpenStudy (somy):

hmmmm

OpenStudy (somy):

1 u drew it wrong

OpenStudy (abmon98):

CH3-CBrH--CH2I

OpenStudy (abmon98):

thats for I

OpenStudy (somy):

yes

OpenStudy (somy):

wait what

OpenStudy (abmon98):

CH2=CHCIHBr for II

OpenStudy (somy):

it'll be CH3-CH2-CHBrI for 1

OpenStudy (somy):

optical isomer is about chiral center

OpenStudy (abmon98):

CH2=CH-CHIBR

OpenStudy (abmon98):

thats for II

OpenStudy (somy):

u've gotta put it the way that makes chiral C

OpenStudy (abmon98):

yes i know

OpenStudy (somy):

yup 2 is right

OpenStudy (abmon98):

CH2-CHI-CH3 thats for III

OpenStudy (somy):

CH3-CHI-CH2I is for 3

OpenStudy (somy):

u did wrong for 3

OpenStudy (abmon98):

yes your right i missed an iodine

OpenStudy (abmon98):

CH2=CHCHBr2

OpenStudy (abmon98):

thats for Iv and thats not chiral

OpenStudy (somy):

last one doesnt have chiral center because of its double bond and presence of 2 Br atoms

OpenStudy (abmon98):

exactly! thank you for your help :')

OpenStudy (somy):

u r welcome :) @Abmon98

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