IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => GCE AS & A2 Level => Sciences => Topic started by: sweetie on June 04, 2010, 03:57:57 pm

Title: ChEm CiE P1 QuE's.....
Post by: sweetie on June 04, 2010, 03:57:57 pm

need help in Q 10,23,39 of nov04

Title: Re: ChEm CiE P1 QuE's.....
Post by: nid404 on June 04, 2010, 04:56:29 pm

23) All possible isomers

C2H5Br
C2H4Br2
C2H3Br3
C2H2Br4
C2HBr5
C2Br6

The ones underlined can have isomers  so 9 possibilities

39) What's the issue here? OH group will react with metallic sodium. Can't be dehydrated...Carbon attached to four others...it's saturated.
and it's empirical formula isn't CH3O

I need time for the 10th...im confused too  :P

Title: Re: ChEm CiE P1 QuE's.....
Post by: sweetie on June 09, 2010, 08:37:02 pm

Thank You nid......

i also need help in just 1 Que. plzzz
nov06 Q1

Title: Re: ChEm CiE P1 QuE's.....
Post by: superduper2009 on June 09, 2010, 10:22:31 pm

hey @~Xena~... ur nid404 rite???...
U seem pretty good in chemistry...
Can you please please give me a few tips for paper 1 ..
Also.. can u plz advise me on how to study right now....
Thanks :D
superduper2009

Title: Re: ChEm CiE P1 QuE's.....
Post by: nid404 on July 03, 2010, 02:20:07 pm

Gosh I feel horribly bad...I didn't see this...Sorry :(

Hope your paper was good... :-[