Mavzu: modda va uning xossalari

17-Laboratoriya ishi: MIS (II)-GIDROKSIDI QIZDIRILGANDA PARCHALANISHINI KUZATISH.
Maqsad: suvda erimaydigan asoslarning temperatura ta'sirida parchalanishini o'rganish.
Jihozlar: polipropilen stakan 50 ml (1), tomchi analizi uchun to'plam (2), probirka (3), shisha tayoqcha (4), plastik taglik (5), polipropilen menzurka (6), probirka qizdirgich, avtomatik mikropipetka.
Reaktivlar: mis sulfat CuS0₄, natriy gidroksidi NaOH eritmalari.

Jihozlar to'plami avtomatik mikropipetka probirka qizdirgich
Ishni bajarish tartibi:

1. 
   Probirkaga mis sulfat CuS0₄ eritmasidan tomiziladi.
   
2. 
   Ustiga avtomatik mikropipetka yordamida natriy gidroksidi NaOH eritmasidan 3-4 tomchi tomiziladi.
   

3. 
   Hosil bo'lgan cho`kma eritmadan ajratiladi va probirka qizdirgichda rangi o'zgargunga qadar qizidiriladi.
   
4. 
   Probirka devorlarida suv tomchilari paydo bo'ladi.
   

Cho'kma parchalanib, modda rangining o'zgarishiga e'tibor beriladi, kuzatilgan hodisa izohlanadi, reaksiya tenglamasi yoziladi.
Nazorat uchun savollar:

1. 
   Ko'k rangli mis (H)-gidroksid Cu(OH), qizdirilganda awal sariq, so'ng qizil rang hosil qilish sabablarini tushuntiring.
   
2. 
   Reaksiya tenglamasini yozing.
   
3. 
   Probirka devorlarida suv tomchilarining hosil bo'lishini izohlab bering.
   

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