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Author Topic: Some likely topics in CIE A level chem.paper2?  (Read 8119 times)

Offline MaNi_DaDuDe

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Re: Some likely topics in CIE A level chem.paper2?
« Reply #15 on: November 04, 2009, 12:11:13 am »
omg

what did you guys find hardest in the paper?!
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Offline wunderkind

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Re: Some likely topics in CIE A level chem.paper2?
« Reply #16 on: November 04, 2009, 12:21:21 am »
Quote from: raunaqbhatia on November 03, 2009, 03:05:09 pm
People we need to discuss chem ! ok anyways wats.

Q. Define Ionic radius ?

Q. tell me all you can tell me about complex ions ?

Q Al2O3 + H20 -> ??????

Q.Al2o3 +NaOH -> ???

1 - distance from the nucleus to the outermost electron

note:- Al2O3 is amphoteric so it can act as both an acid and a base depending on wat it reacts with. so acid + base = salt + water

3 - Al(OH)3 + H2O ==> got this from wiki because i wasn't sure

4 - NaAl04 + H2O
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Offline neo_park

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Re: Some likely topics in CIE A level chem.paper2?
« Reply #17 on: November 04, 2009, 01:22:51 am »
Quote from: wunderkind on November 04, 2009, 12:21:21 am

3 - Al(OH)3 + H2O ==> got this from wiki because i wasn't sure




Al2O3 + 3 H2O ? 2 Al(OH)3

the one u wrote was almost correct, do be careful dat u can't have H2O on both sides of da equation
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Offline Sorceres

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Re: Some likely topics in CIE A level chem.paper2?
« Reply #18 on: November 04, 2009, 07:11:21 am »
Quote from: MaNi_DaDuDe on November 04, 2009, 12:11:13 am
omg

what did you guys find hardest in the paper?!

omfg the first 2 questions were a killer..
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Offline polaroidsoflove

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Re: Some likely topics in CIE A level chem.paper2?
« Reply #19 on: November 04, 2009, 07:14:14 am »
Quote from: Sorceres on November 04, 2009, 07:11:21 am
omfg the first 2 questions were a killer..

What were the topics?
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Offline Sorceres

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Re: Some likely topics in CIE A level chem.paper2?
« Reply #20 on: November 04, 2009, 07:23:15 am »
Quote from: polaroidsoflove on November 04, 2009, 07:14:14 am
What were the topics?

sorry dude.. can't say til maybe tmr...
« Last Edit: November 04, 2009, 08:18:18 am by Sorceres »
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Offline raunaqbhatia

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Re: Some likely topics in CIE A level chem.paper2?
« Reply #21 on: November 04, 2009, 08:09:07 am »
ah cmon dude justt help me out with sum equations and hard topics...like i suggested dose
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Offline Sorceres

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Re: Some likely topics in CIE A level chem.paper2?
« Reply #22 on: November 04, 2009, 08:23:36 am »
Quote from: raunaqbhatia on November 03, 2009, 03:05:09 pm
People we need to discuss chem ! ok anyways wats.

Q. Define Ionic radius ?

Q. tell me all you can tell me about complex ions ?

Q Al2O3 + H20 -> ??????

Q.Al2o3 +NaOH -> ???

Q3. Al2o3 does not dissolve in water because of high lattice energies.

Q4. Al203 + 2NaOH + 3H20 -> 2NaAl(OH)4
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Offline raunaqbhatia

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Re: Some likely topics in CIE A level chem.paper2?
« Reply #23 on: November 04, 2009, 08:35:39 am »
thanks man ill reputate u but can u explain high lattice energy stuff a bit more and....wat do u think i should study cause i am goin 2 write in 30mins
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Offline polaroidsoflove

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Re: Some likely topics in CIE A level chem.paper2?
« Reply #24 on: November 04, 2009, 08:37:03 am »
Is there a question on Kp or Kc?
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Offline raunaqbhatia

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Re: Some likely topics in CIE A level chem.paper2?
« Reply #25 on: November 04, 2009, 08:44:06 am »
and organic man dat kills
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Offline Sorceres

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Re: Some likely topics in CIE A level chem.paper2?
« Reply #26 on: November 04, 2009, 08:49:36 am »
Quote from: polaroidsoflove on November 04, 2009, 08:37:03 am
Is there a question on Kp or Kc?

i'm so sorry but u just have to find out when u sit for it..
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Offline Sorceres

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Re: Some likely topics in CIE A level chem.paper2?
« Reply #27 on: November 04, 2009, 08:50:30 am »
Quote from: raunaqbhatia on November 04, 2009, 08:35:39 am
thanks man ill reputate u but can u explain high lattice energy stuff a bit more and....wat do u think i should study cause i am goin 2 write in 30mins

haven't learnt about that.. its in A2 i think..
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Offline MaNi_DaDuDe

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Re: Some likely topics in CIE A level chem.paper2?
« Reply #28 on: November 04, 2009, 09:17:41 am »
what you write for q2 sor?
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Offline Tyserius

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Re: Some likely topics in CIE A level chem.paper2?
« Reply #29 on: November 04, 2009, 10:01:33 am »
My friends just had their exam today. And FYI, they said it was surprisingly tough. Beats me, I'm Chem-less :D
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Take it easy and go slow and steady.
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