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Chemistry MCQ thread...

Discussion in 'International A And AS Level' started by Zishi, May 26, 2011.

  1. Deeksha Tamang

    Deeksha Tamang

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    When solid ammonium chloride dissociates at a certain temperature in a 0.500dm3 container, ammonia and hydrogen chloride are formed. NH4Cl(s) NH3(g) + HCl(g) The initial amount of ammonium chloride was 1.00mol, and when the system had reached equilibrium there was 0.300mol of ammonium chloride. What is the numerical value of Kc for this reaction under these conditions?
    A 0.490 B 1.63 C 1.96 D 3.27
    can u show me how to sove it??
     
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  3. Metanoia

    Metanoia

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    Note that ammonium chloride does not appear in the Kc expression as it is a SOLID.
    Capture.PNG
     
  4. Ahsan Ausaf Ali

    Ahsan Ausaf Ali

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    Been a long time since I left tho forum but I see A Levels is still all the same, nostalgia !
     
  5. A*****

    A*****

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    Hahahaha so what r u doing nowadays?
     
  6. Deeksha Tamang

    Deeksha Tamang

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    Sure ..thanks a lot
     
  7. Ahsan Ausaf Ali

    Ahsan Ausaf Ali

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    done with engineering obviously, A Levels was great though, and this forum used to be a life saver, i remember just 30 miinutes after each paper, we all used to be here discussing Lol.... what a feeling !
     
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