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  1. H

    Chemistry: Post your doubts here!

    May june 2016/12, q#7 why the answer is D instead of C, any comments please?
  2. H

    Chemistry: Post your doubts here!

    it's okay, got it !!! thanks anyway:)
  3. H

    Chemistry: Post your doubts here!

    can anyone kindly help me to solve q#4 october november 2016 component 12?
  4. H

    Chemistry: Post your doubts here!

    JazakAllah Khairan kaseera Actually i didn't have the examiner report so couldn't get any clue,thanks once again
  5. H

    Chemistry: Post your doubts here!

    Thanks, got it, any idea of question 20?
  6. H

    Chemistry: Post your doubts here!

    got it thanks :)
  7. H

    Chemistry: Post your doubts here!

    Kindly solve these May June 2017/11 q#20,24
  8. H

    Solution for kids stability and entropy questions for June 2016

    Anyone has the solution for recently added nernst equation, kindly stability and entropy questions for the year summer 207? Regards
  9. H

    9701 May June 2015 variant 41 question 4 part d

    hi! Anyone please help me in the d part , why the concentration of iron (iii) sulfate is taken as 0.2 while in the question it is given as 0.1 mol dm-3. Please help
  10. H

    Chemistry: Post your doubts here!

    Oh , ok I have got the answer, thank you so very much for the help you extended
  11. H

    Chemistry: Post your doubts here!

    How come 9/20 mole?? can you please expalin?
  12. H

    Physics, Chemistry, Biology --------> Hardest Questions Compiled #A Level Version

    can you please upload for chemistry as well?
  13. H

    Chemistry: Post your doubts here!

    Need help for this question please ?
  14. H

    Chemistry: Post your doubts here!

  15. H

    Chemistry: Post your doubts here!

    But on xtreme papers may June 2014 papers are not available , I have just checked it.
  16. H

    Chemistry: Post your doubts here!

    Can somebody help me to explain the way of quoting the link please?
  17. H

    Chemistry: Post your doubts here!

    I have tried this questions so many times but i am not getting a correct answer. please help. may june 2014, component 12 Q # 9
  18. H

    Chemistry: Post your doubts here!

    and secondly in my opinion , heat of solution is the difference between lattice dissociation enthalpy and hydration enthalpy
  19. H

    Chemistry: Post your doubts here!

    The heat energy released when new bonds are made between the ions and water molecules is known as the hydration enthalpy of the ion. The hydration enthalpy is the enthalpy change when 1 mole of gaseous ions dissolve in sufficient water to give an infinitely dilute solution. Hydration enthalpies...
  20. H

    Chemistry: Post your doubts here!

    is the answer B? if so then it means reaction 1 is endo as it requires heat to decompose calcium carbonate, and reaction 2 is exo in nature as hydration is always exo
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