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

Qualification => Subject Doubts => GCE AS & A2 Level => Sciences => Topic started by: mousa on March 27, 2010, 03:14:54 pm

Title: Urgent cie chemistry questions!!
Post by: mousa on March 27, 2010, 03:14:54 pm

Hello everyone, i need help with those questions:
Q 13,19,26,28.

Thanks in advance.

Title: Re: Urgent cie chemistry questions!!
Post by: mousa on March 28, 2010, 03:08:15 am

no one?\ ???

Title: Re: Urgent cie chemistry questions!!
Post by: nid404 on March 28, 2010, 04:10:02 am

In the night...I have to do bio n mechs for my exam tom...
hopefully some1 will be able to do it before me

Title: Re: Urgent cie chemistry questions!!
Post by: student92 on March 28, 2010, 06:20:16 pm

Q 13 -B
Q19 - D
Q26 - A
Q28 - C

Anything else? :)

Title: Re: Urgent cie chemistry questions!!
Post by: Nobody on March 28, 2010, 06:28:46 pm

here...if you need other answers.. ;D ;D
http://www.srepapmaxeeeerf.org/A%20Level/Chemistry/CIE/2009%20Jun/9701_s09_ms_1.pdf

Title: Re: Urgent cie chemistry questions!!
Post by: nid404 on March 28, 2010, 07:34:15 pm

he wnted ull to explain it :P
lol..nvr mind


Q13...All the other salts r soluble...won't precipitate...
Q19  No option but to sit an count :-\
Q26 A has only a carbonyl group...Sodium will not react with it
Q28 one carbonyl in the ring structure, one in CO2 and one in COOH that forms