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  1. aaditya menon

    chem p22 pencil!!

    Nope, I don't think so.
  2. aaditya menon

    Chem p22

    All correct, i'm not sure about one though. Wasn't the question about the chloride of the period element which is burning? Na will burn with a yellow flame in Cl2 or any gas! Im not saying that Na is incorrect, i'm confused myself. The burning of chlorides is something new to me.
  3. aaditya menon

    Chem p22

    I wrote Al2Cl6 too, darn! I'm not entirely sure if it's incorrect though. [Although AlCl3 dimerises at low temperature to form Al2Cl6, there was heating involved so..]
  4. aaditya menon

    Who me? :P

    Who me? :P
  5. aaditya menon

    Chemistry Paper 2

    "Aluminium chloride is hygroscopic, having a very high affinity for water. It fumes in moist air and hisses when mixed with liquid water as the Cl- ions are displaced with H2O molecules in the lattice to form the hexahydrate AlCl3·6H2O (also white to yellowish in color). The anhydrous phase...
  6. aaditya menon

    Chemistry Paper 2

    I'm not sure if it's AlCl3 or Al2Cl6. I wrote P too, don't know why. Never heard of PCl5/PCl3 burning with a coloured flame, weird question man. And did Aluminum chloride dissolve or react? I think it reacts coz it forms a complex and an H+. meh
  7. aaditya menon

    Chemistry Paper 2

    C6H8O7, definitely.
  8. aaditya menon

    Chemistry Paper 2

    AlCl3 or Al2Cl6? Does Aluminum chloride react with water or dissolve in it? The period 3 chloride which burns with a colored flame is? The organic question, do both the -COOH groups get converted to an ester group when they react with an alcohol?
  9. aaditya menon

    Chemistry Paper 2

    I really doubt that.
  10. aaditya menon

    Chemistry Paper 2

    Er, le chatelier's principle talks about the change in concentration as you vary the pressure. They had clearly mentioned that we have talk about the change in the RATE OF THE REACTION as you change the temp/pressure etc. That was in bold too, if I remember. This was the trick in that question...
  11. aaditya menon

    Well, Hi to you too then!

    Well, Hi to you too then!
  12. aaditya menon

    Chemistry Paper 22: Discussion and Grade Threshold

    Shouldn't lose more than 5. *Fingers crossed*
  13. aaditya menon

    Hi?

    Hi?
  14. aaditya menon

    Bless you for the Paper 5 notes.

    Bless you for the Paper 5 notes.
  15. aaditya menon

    AS Chemistry P2 Prep.

    Bingo. Both involve a condenser, distillation is a separation technique.
  16. aaditya menon

    AS Chemistry P2 Prep.

    Because placing the condenser above doesn't matter a difference if the liquids are not volatile. So the student won't be penalized for writing reflux because heating is accompanied with reflux.
  17. aaditya menon

    AS Chemistry P2 Prep.

    "Heating under reflux means heating with a condenser placed vertically in the flask to prevent loss of volatile substances from the mixture" Thats what it means. More or less, similar to distillation.
  18. aaditya menon

    AS Chemistry P2 Prep.

    Okay, first, I KNOW that for acids to form u need to reflux. And a condenser is attached anyhoo (distillation or Reflux!). And no reflux is not the exact opposite of distillation. Here, check this image http://en.wikipedia.org/wiki/File:Fractional_distillation_lab_apparatus.svg And see what it...
  19. aaditya menon

    Can somebody post all the reagents and conditions for ORGANIC CHEMISTRY (AS LEVEL)?

    Er, no, what I've posted is the A2 organic reactions.
  20. aaditya menon

    AS Chemistry P2 Prep.

    Did I just read reflux means really strong heating? Guyz, no! Reflux is when you have to distill something off before the reaction proceeds. FOr instance, while oxidizing an alcohol to get an aldehyde and not an acid, one should reflux the aldehyde as it is formed so that it doesn't stay in...
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