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  1. Metanoia

    Chemistry: Post your doubts here!

    CN- , yes. HCN, no.
  2. Metanoia

    Chemistry: Post your doubts here!

    I'll be here for at most 15 min more. Tomorrow is working day, so don't think I can do much before your paper. You can try to post tomorrow, but I can't guarantee I'll reply in time.
  3. Metanoia

    Chemistry: Post your doubts here!

    Did you happen to include "Ag solid" in the Kc?
  4. Metanoia

    Chemistry: Post your doubts here!

    Don't confuse able to be oxidised with able to be dehydrated. If you remove the OH from the 1st alcohol , where would you be removing the H to form the double bond?
  5. Metanoia

    Chemistry: Post your doubts here!

    The first alcohol will not be able to dehydrated by conc H2SO4
  6. Metanoia

    Chemistry: Post your doubts here!

    Can't understand your question? Are you asking why secondary alcohol is more acidic?
  7. Metanoia

    Chemistry: Post your doubts here!

    You can visualise that C loses 4 electrons and N gains 1 electron. So you need 4 moles of N to react with 1 mole of C.
  8. Metanoia

    Chemistry: Post your doubts here!

    For dehydration, lets say you remove 1 OH, where do you think you can get the other H from?
  9. Metanoia

    Chemistry: Post your doubts here!

    Study a few of those commonly asked questions, yes. But not at the expense of sacrificing sleep before the exam day. Rather have proper sleep and remember 50%, then cramp info and forgo sleep and just retain 20%.
  10. Metanoia

    Chemistry: Post your doubts here!

    The most sensible thing to do for the last few hours is to get decent sleep for the brain to process infomation, rather than forgo sleep to cram more stuff.
  11. Metanoia

    Chemistry: Post your doubts here!

    ok. :)
  12. Metanoia

    Chemistry: Post your doubts here!

    I'll update this in a while
  13. Metanoia

    Chemistry: Post your doubts here!

    I feel it doesn't matter, since they asked the questions, they should know to check back for the updated answers. But its up to you, whichever is comfortable.
  14. Metanoia

    Chemistry: Post your doubts here!

    The 2 OH is added with cold dilute KMno4 The red circles are the 2 6-membered ring after hot KMno4 breaks the double bond.
  15. Metanoia

    Chemistry: Post your doubts here!

    Maybe we can quote and "click reply" immediately. And then take your time to add the answers by editing the posts. If it turns out we are repeating answers even after that, just leave them posted. Sometimes, it might be good to have differing approaches to the same questions. Quite a few...
  16. Metanoia

    Chemistry: Post your doubts here!

    11qp12 short answer, cross the Al3+ and C4- charges, though it might not always work. Long answer Understand that whatever moles of C we have at the beginning will eventually be the same number of moles of C in CO2 at the end. Let x and y be the ratio of Al and C respectively. AlxCy...
  17. Metanoia

    Chemistry: Post your doubts here!

    Qn 9 : moles of SO3 2- : moles of electrons : moles of metal 0.0025 : : 0. 005 1 : : 2 1 : 2 : 2 2 mol of metal gained 2 mol of electrons 1 mol of metal gained 1 mol of electron (oxidation state will thus decrease by 1) Original oxidation state of metal = +3 Final oxidation state = +3 - 1 = +2
  18. Metanoia

    Chemistry: Post your doubts here!

    The part on the OH being added or the number of rings?
  19. Metanoia

    Chemistry: Post your doubts here!

    w13qp13 Q1. N in NH4+ is -3, increases by 4 units to from +1 in N2O N in NO3- is +5, decreases by 4 units to from +1 in N2O Q22. A. Is not good as we might get multi substitutions B. Is not good as we get dichloropropane C. Cl- will not replace OH D. Cl will replace at the OH position Q30...
  20. Metanoia

    Chemistry: Post your doubts here!

    oh, I think drew the columns wrongly . I'll edit the post.
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