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  1. asadalam

    Chemistry: Post your doubts here!

    What about water and ammonium chloride?Thats endothermic
  2. asadalam

    Chemistry: Post your doubts here!

    No as in propanal the H atom is not bonded to O atom so there will be no H-bonding if you look closely.H bonding requires H to be bonded with a highly electronegative atom like O,but in both cases O is bonded to C not H.
  3. asadalam

    Chemistry: Post your doubts here!

    But there isnt a change in oxidation state.It doesnt matter how many you gain,the Oxidation state is key, A?
  4. asadalam

    Chemistry: Post your doubts here!

    H+ ions already have 1+ oxidation state so in water it remains same so they arent oxidised.Similar in the next one.Both have 1+ in H20
  5. asadalam

    Chemistry: Post your doubts here!

    Because the Cl cancel out some of the net dipole caused by O.Similar in the case of CCl4 So3 etc where there are E-ve elements but no net dipole
  6. asadalam

    Chemistry: Post your doubts here!

    I guess it makes sense though,it'll lose from the S shell first as they are paired i guess.
  7. asadalam

    Chemistry: Post your doubts here!

    We havent read this in AS :/
  8. asadalam

    Chemistry: Post your doubts here!

    How?It would have 20 electrons so wouldnt last 2 be in more stable 1s2?
  9. asadalam

    Chemistry: Post your doubts here!

    How does Q31 3 have 2 UPE?Doesnt the ion have just 4s2?
  10. asadalam

    Phys p12 and Chem p12- 9th and 10th June,2015 Tips!

    6A* thay wese :P
  11. asadalam

    Chemistry: Post your doubts here!

    Thanks a lot bro/sis!Please help out in these as well:
  12. asadalam

    Phys p12 and Chem p12- 9th and 10th June,2015 Tips!

    9A* kahan se bhai :P
  13. asadalam

    Phys p12 and Chem p12- 9th and 10th June,2015 Tips!

    Lol really?I find Phy more easier in recent years than chem :P
  14. asadalam

    Chemistry: Post your doubts here!

    Thanks!Mind explaining this one as well:
  15. asadalam

    Chemistry: Post your doubts here!

    Thanks a lot,can you explain this as well?
  16. asadalam

    Chemistry: Post your doubts here!

    And what about the second one?HCl and Ccl4 one
  17. asadalam

    Chemistry: Post your doubts here!

    I got this but it says it behaves like an ideal gas,so shouldnt it have separate atoms of I instead of atoms that have intermolecular forces like I2
  18. asadalam

    Chemistry: Post your doubts here!

    Thanks,mind explaining these as well: It behaves as an ideal gas so shouldnt the particles be I instead of I2? HCl is polar,while Ccl4 is not so shouldnt it have higher mp?
  19. asadalam

    Chemistry: Post your doubts here!

    Can anyone explain this? shazmina
  20. asadalam

    Chemistry: Post your doubts here!

    Because they form cations
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