• Tajribada olingan natijalarini qayd qilish jadvali
  • I sh hisoboti
  • Tajriba jarayonida 5 va 8 jo‘mraklar yopiq bo‘lishi kerak! 5-jo‘mrak faqat tuzumni bosimini o‘zgartirish uchun ochib-yopiladi!




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    Tajriba jarayonida 5 va 8 jo‘mraklar yopiq bo‘lishi kerak! 5-jo‘mrak faqat tuzumni bosimini o‘zgartirish uchun ochib-yopiladi!
    Ps = PaPmquyidagicha hisoblanadi (mm. simob ustuni),
    Pa – tajriba o‘tkazilayotgandagi atmosfera bosimi bo‘lib, barometrdan yozib olinadi (mm. simob ustuni),
    Pm – manometrdagi bosim (mm.simob ustuni),
    Pssistemadagi bosim,
    lgPs esa, Ps son qiymatining logarifmi,
    Tqqaynash harorati, termometrdan yozib olinadi.
    Olingan natijalar lgP = f(1/T) koordinata o‘qlariga qo‘yib, tenglama asosida ∆H topiladi.

    Tajribada olingan natijalarini qayd qilish jadvali:



    T/r


    Modda (suyuqlik)


    Pa


    Pm


    Ps


    lgPs


    tq


    Tq


    1/T·10-3


    1


    Benzol




    200












    2


    - II -




    150












    3


    - II -




    100












    4


    - II -




    50












    5


    - II -




    0












    I
    sh hisoboti
    : qaynash harorati bosim bilan o‘zgaradi va Klauzius- Klapeyron tenglamasi orqali ifodalanadi.
    18.2-rasm.Haroratni bosim bilan bog‘liqlik grafigi

     bunda topiladi.


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    Nazorat Savollari

    1. Eritmalar qanday sinflarga bo’linadi?


    2. Eritma konsentratsiyasini ifodalash usullari.
    3. Eritmalar hosil bo’lishi fizik-kimyoviy nuqtai nazardan qanday tushuntiriladi?
    4. Termodinamik jihatdan eritmalarning sinflanishi.
    5. Eritmaning ekstensiv termodinamik xossasini tushuntiring.
    6. Parsial molyar kattalik nima?
    7. Parsial molyar kattaliklar qanday usullarda hisoblanadi?
    8. Gibbs-Dyugem tenglamalarini tushuntiring.

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    Tajriba jarayonida 5 va 8 jo‘mraklar yopiq bo‘lishi kerak! 5-jo‘mrak faqat tuzumni bosimini o‘zgartirish uchun ochib-yopiladi!

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