Mavzu: modda va uning xossalari

10-Laboratoriya ishi: KISLOTALARNING METALLARGA TA'SIRINI O'RGANISH.
Maqsad: kislotalarning turli aktivlikdagi metallar bilan o'zaro ta'sirini va kislotalar tabiatinin ularning kimyoviy xossalariga ta'sirini o'rganish.
Jihozlar: polipropilen stakan 50 ml (1), tomchi analizi uchun to'plam (2), probirkala (3), shisha tayoqcha (4), plastik taglik (5), polipropilen menzurka (6), probirka qizdirgich
Reaktivlar: rux, temir, mis granulalari, xlorid va sulfat kislota (10%) eritmalari.
O'quv-ko'rgazmali qurollar: «Kimvo fanidan proyeksion ko'rgazmali-metodik qo'llanmalar», 38-bet.
Eritma tayyorlash: konsentrlangan ( = 1,14 g/sm3) xlorid kislotadan uning 10% 50 eritmasini tayyorlash: Stakanga menzurkadan 45 ml distillangan suv soling. Uning ustig pipetka orqali 4,5 ml konsentrlangan xlorid kislotadan soling. Tayyorlangan eritmani keyin tajribalarga olib qo'yish mumkin.

Sulfat kislotaning 10% li entmasini tayyorlash. Buning uchun stakanga menzurka yordamida 45 ml distilangan suv soling. Uning ustiga pipetka yordamida 5 ml konsentrlangan sulfat kislota quying va shisha tayoqcha bilan aralashtiring.





Jihozlar to'plami probirka qizdirgich
Ishni bajarish tartibi:

1. 
   Uchta probirkaning biriga temir, 2-siga rux, 3-siga mis granulalari solinadi. Ustiga 3-4 tomchi xlorid kislotasi eritmasidan tomiziladi.
   
2. 
   Yuqoridagi tajriba sulfat kislota eritmasi bilan ham takrorlanadi va izohlanadi.
   
3. 
   Probirkada reaksiyalar sodir bo'lmasa probirka qizdirgichda isitiladi.
   
4. 
   Reaksiya mohiyati tushuntiriladi va tenglamalari yozib olinadi.
   

Nazorat uchun savollar:

1. 
   Metallarning aktivlik qatoridan qanday foydalanish mumkin?
   
2. 
   Mis metalining konsentrlangan va suyultirilgan HNO_rnitrat kislota bilan ta'sirini izohlab bering.
   
3. 
   Ushbu metallarning H₂S0₄ sulfat kislota bilan ta'siri haqida gapirib bering
   

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