Qualification > Sciences
AS CHEMISTRY PAPER 33
forkasha:
--- Quote ---how do u differentiate between aluminum and lead ions???
how do u differentiate between ketones and aldehydes???
how do u differentiate between the halogens???
how do u differentiate between sulfates and sulfites???
How do u test for carboxylic acids...
how do u test for alkanes and alkenes?
here is the answer
1.by using chromate it gives ppt with lead and clear solution with aluminum
2.tollens and 2,4-dinitoro..........
3.don't know ???
4.written in the last paper of the exam
5.don't know ???
6.don't know ???
that's all wat i know i wish i have helped and if u have ask me i me and i will to best to answer
oh ur welcome :) :) :) :)
goooooooooooooooooooooooooooooooooooodddddddddddddddddddddddddddddd luuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuccccccccccccccck 2 all of us ;) ;) ;)
--- End quote ---
islu_jf:
--- Quote from: superduper2009 on May 20, 2010, 01:34:03 am ---how do u differentiate between aluminum and lead ions???
how do u differentiate between ketones and aldehydes???
how do u differentiate between the halogens???
how do u differentiate between sulfates and sulfites???
How do u test for carboxylic acids...
how do u test for alkanes and alkenes?
thanks in advance :D
--- End quote ---
for carboxylic acids .. add metal carbonate and CO2 wil be produced// test with lime water//
for the last one.. add bromine water... the alkane will stay a brown solution bt the alkenes will change to a colourless..bcoz of the double bond!! ..
superduper2009:
Thanks to every1 who replied...
I'm "going in" after a few hrs....
lets see how the paper goes :S :D
XaM!!:
@mista haha lage raho... apni zabaan me baate karu inku samaj hi nhi ayegi. lol
IGCSE nightmare:
I did mine!
I am not intending to discuss but are personal messages allowed between who are done with the exam?
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