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Author Topic: CHEMISTRY. P3. CIE.. advice and titrations?  (Read 4320 times)

Offline MistahNobodeh

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Re: CHEMISTRY. P3. CIE.. advice and titrations?
« Reply #30 on: May 19, 2010, 11:36:10 pm »
Quote from: Ro1024 on May 19, 2010, 08:53:58 pm
are there titrations in paper 31?????
Actually that depends paper by paper. We could get anything at all. Anyways I will really hope that we get Enthalpy cuz I practiced really hard on those.
Can u believe it?? Our teacher didn't practice with us ONE enthalpy question the whole year. Not ONE. And in Mocks she gives an enthalpy question.
Anyways that had me convinced that we may get enthalpy instead of Titration this year. Also can anyone confirm if v r going to get 3 practicals in a paper now rather than the usual 2?? Well May June 09 had 3 but October November had 2 so...I am confused. Is there a trend??
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Offline Ro1024

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Re: CHEMISTRY. P3. CIE.. advice and titrations?
« Reply #31 on: May 19, 2010, 11:58:14 pm »
i think, they might give is an enthalpy change prac as well as an analysis and a organic one as well!
3 pracs in total.. i think, cos most of the time goes in the titration and if a titration is not there, then the time might be equal for all 3 instead of 2.
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Offline superduper2009

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Re: CHEMISTRY. P3. CIE.. advice and titrations?
« Reply #32 on: May 20, 2010, 12:21:21 am »
what stuff do we need to know in organic chemistry?
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Offline Ro1024

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Re: CHEMISTRY. P3. CIE.. advice and titrations?
« Reply #33 on: May 20, 2010, 12:55:40 am »
anyone malysian?? xD please reply to this thread or send me an inbox! need to talk urgently!
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Offline superduper2009

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Re: CHEMISTRY. P3. CIE.. advice and titrations?
« Reply #34 on: May 20, 2010, 01:33:45 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
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Offline Candela

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Re: CHEMISTRY. P3. CIE.. advice and titrations?
« Reply #35 on: May 20, 2010, 01:42:58 am »
sulfate & sulfite is given in the analysis notes.
sulfate- gives white ppt with Ba2+ or Pb2+ (insoluble in excess dilute strong acid)

sulfite- gives white ppt with Ba2+ (soluble in excess dilute strong acid)
          So2 liberated with dilute acids!
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Offline ifraha18

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Re: CHEMISTRY. P3. CIE.. advice and titrations?
« Reply #36 on: May 20, 2010, 02:04:43 am »
can nione tel me some past pprs in whch enthalpy was given..??plz...
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Offline forkasha

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Re: CHEMISTRY. P3. CIE.. advice and titrations?
« Reply #37 on: May 20, 2010, 02:25:43 am »
i think nov09
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Offline piggydiggy

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Re: CHEMISTRY. P3. CIE.. advice and titrations?
« Reply #38 on: May 20, 2010, 12:16:08 pm »
i hate my question no 1 on paper 32.. arghh ! that was like crazy, i studied about titration and there's no titration at all. great.
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