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Search results

  1. PANDA-

    Chemistry : P1 and P2 doubts only (Only AS allowed)

    Marking scheme of w06 says H2SO4 + heat. Awesome, I can do "heat" :P
  2. PANDA-

    Chemistry : P1 and P2 doubts only (Only AS allowed)

    Honestly! I wrote a paragraph about them being close to ideal gas behaviour LOL
  3. PANDA-

    Chemistry : P1 and P2 doubts only (Only AS allowed)

    What doubt?
  4. PANDA-

    Chemistry: Post your doubts here!

    Guys discuss AS here: https://www.xtremepapers.com/community/threads/chemistry-p1-and-p2-doubts-only-only-as-allowed.25455/
  5. PANDA-

    Chemistry: Post your doubts here!

    RCOOH + XCO3 ---> CO2 + H2O + salt e.g. 2CH3COOH + CaCO3 ---> (CH3COO)2Ca+ H2O + CO2 I got it off google :D I don't think you need to know the equation. In the papers I answered some papers, according to that what I know is that you need to know that CO2 is given out (effervesence) and this...
  6. PANDA-

    Chemistry: Post your doubts here!

    I kind of like Bio. It's a cool subject, interesting and all, but terribly long.
  7. PANDA-

    Chemistry: Post your doubts here!

    Yeah, but it's bio. :cry:
  8. PANDA-

    Chemistry: Post your doubts here!

    I have Biology and Mechanics on the same day, 13th May. :cry:
  9. PANDA-

    Chemistry : P1 and P2 doubts only (Only AS allowed)

    Cool
  10. PANDA-

    Chemistry: Post your doubts here!

    This AS and A Level questions in the same topic seems very unhealthy to both parties. (n)
  11. PANDA-

    Chemistry: Post your doubts here!

    But KMnO4 would just oxidize the Alcohol into the corresponding carboxylic acid... What if we want the aldehyde then?
  12. PANDA-

    Chemistry: Post your doubts here!

    Depends, if they say what reagent is needed to change an alcohol to an aldehyde, KMnO4 is wrong.
  13. PANDA-

    Chemistry: Post your doubts here!

    KMnO4 is a strong oxidising agent if I'm not mistaken, and K2Cr2O7 is a weak oxidising agent. You can use K2Cr2O7 for mild oxidation of Alcohol to Aldehydes... Unless a reflux with heat is used, then even K2Cr2O7 can oxidise alcohols directly to carboxylic acids.
  14. PANDA-

    Chemistry: Post your doubts here!

    Looks like almost everyone here is A2 I'm still AS.
  15. PANDA-

    Chemistry: Post your doubts here!

    You got it wrong there, all alkali are bases bot not all bases are alkaline. This is because alkali's are bases which are dissolved in water, like NaOH(aq) for example. Reactivity mainly depends on the effective nuclear charge, atomic radius, and molar mass (not really sure about molar mass lol).
  16. PANDA-

    Chemistry: Post your doubts here!

    LOL.
  17. PANDA-

    Chemistry: Post your doubts here!

    One more thing iKhaled Do we have to show all bonds when drawing a displayed formula? Like if there's a big compound, can we draw CH3 as CH3 or do we have to draw it with all bonds?
  18. PANDA-

    Chemistry: Post your doubts here!

    Yes! That's it.. I didn't fully read the question :p My bad. You have the eyes of a hawk o_O
  19. PANDA-

    Chemistry: Post your doubts here!

    Well no, but I just want to know, are answers that are not in the marking scheme but satisfy the question correct, or must the be like the mark scheme... If they must be like the marking scheme, I'd be doomed
  20. PANDA-

    Chemistry: Post your doubts here!

    Close, but not the same... Mine is 2 butene 2-3 diol... The marking scheme is 2 butene 1-4 diol
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