# 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),
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.

 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

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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.