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  1. A

    HOW WAS CHEMISTRY PAPER 22 ?

    It should be (0+x)^2. How come it's 2x? Initial moles were 0 and final were 0+x. And u had to square it as it was 2HI. Why are you using 2x?
  2. A

    Chemistry October/November 2012 Paper 32 how did it went ?

    Oh my God, I'm mistaken. I appeared for 9701 AS Level chemistry:p . This is something else. Sorry.
  3. A

    Chemistry October/November 2012 Paper 32 how did it went ?

    Why expecting so high if it was difficult? It was 24 for an A for prac 33 and 34 last June.
  4. A

    Chemistry October/November 2012 Paper 32 how did it went ?

    Expected gt?
  5. A

    HOW WAS CHEMISTRY PAPER 22 ?

    How many color changes did u get ?
  6. A

    HOW WAS CHEMISTRY PAPER 22 ?

    It was exactly 0.05
  7. A

    HOW WAS CHEMISTRY PAPER 22 ?

    Tell me about the first compound. Wasn't it an aldehyde being oxidised into a crboxylic acid?
  8. A

    HOW WAS CHEMISTRY PAPER 22 ?

    For equilibrium, it was (0+x)^2 / (0.02-x)^2. And then x was 0.018. What did u guys get?
  9. A

    HOW WAS CHEMISTRY PAPER 22 ?

    People please, I want u all to focus on that first organic question. I mean how can we have 10 marks for 6 boxes and 1 color change. Guys please tell what products were u getting on that table and how many "no reactions" were present?
  10. A

    HOW WAS CHEMISTRY PAPER 22 ?

    I guess the first reaction was for an aldehyde being oxidised to a carboxylic acid. I wrote orange to green. I don't think it was a tertiary alcohol. The compound to be oxidized was (CH3)3CHO. Wouldn't the aldehyde group be oxidized to a carboxylic acid?
  11. A

    Chemistry October/November 2012 Paper 32 how did it went ?

    I didn't give 32, I took 34. My paper was kind of moderate. How was 32? What is the expected gt?
  12. A

    Chemistry practical 34 oct/nov important

    I know we weren't supposed to write the deduction, but I wrote it anyways. See it can't be CO2 or SO2 cuz these gases don't require any heating. Guess the only one left is chlorine. Will they cut my mark on that? I wrote the observation also though.
  13. A

    Chemistry practical 34 oct/nov important

    And Zahra as far as I remember, we were asked to add dilute HCl first and then heat the solution. It's obvious that the gas evolved would be chlorine. What did u write btw?
  14. A

    Chemistry practical 34 oct/nov important

    According to some books, chlorine turns litmus red first, then bleaches it. It could not be CO2 or SO2 because you don't need to heat the solution to identify these gases. For CO2 u needed to use limewater and dichromate for SO2. But the question asked to test with litmus, and I guess chlorine...
  15. A

    Hey, can u please tell me when the question papers of O and A Levels for the November 2012 exams...

    Hey, can u please tell me when the question papers of O and A Levels for the November 2012 exams would be available on the internet?
  16. A

    Hey, can u please tell me when the question papers of O and A Levels for the November 2012 exams...

    Hey, can u please tell me when the question papers of O and A Levels for the November 2012 exams would be available on the internet?
  17. A

    Chemistry practical 34 oct/nov important

    If blue litmus turned red, then was it chlorine gas?
  18. A

    Hi bro. Please reply to my queries in the chem practical forum.

    Hi bro. Please reply to my queries in the chem practical forum.
  19. A

    Chemistry practical 34 oct/nov important

    Guys the question in which we were supposed to calculate the mean, were the units in cm^3? I remember that I was getting 3.56.
  20. A

    Chemistry practical 34 today

    I guess the threshold would be around 30. What do u guys think?
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