Mavzu: modda va uning xossalari

11- Laboratoriya ishi: KISLOTALARNING METALL OKSIDLARI BILAN O'ZARO TA'SIRI
Maqsad: kislotalarning turli aktivlikdagi metall oksidlar bilan o'zaro ta'sirini va kislotalar tabiatining ularning kimyoviy hodisalarga ta'sirini o'rganish.
Jihozlar: polipropilen stakan 150 ml li (1), shisha stakan (2), polipropilen stakan 50 ml (3), plastik taglik (4), probirka (5), plasmassa shpatel (6), shisha tayoqcha (7), pipetka (8), probirka qizdirgich.
Reaktivlar: xlorid va sulfat kislotalar, temir (III) - oksidi, rux oksidi.
Eritma tayyorlash: konsentrlangan ( = 1,14 g/sm3) xlorid kislotadan uning 10% 50 ml eritmasini tayyorlash usuli: stakanga menzurkadan 45 ml distillangan suv soling. Uning ustiga pipetka orqali 4,5 ml konsentrlangan xlorid kislotadan soling. Tayyorlangan eritmani keyingi tajribalarga olib qo'yish mumkin.
Sulfat kislotaning 10% li eritmasini tayyorlash. Buning uchun stakanga menzurka yordamida 45 ml distillangan 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.Ikkita probirkaga shpatel yordamida temir (III)-oksidi solib, biriga xlorid kislota, 2 siga
2.sulfat kislota solinadi va o'zgarishlar kuzatiladi.
3.Oksid erimagan taqdirda, probirka qizdiriladi.
4.Hosil bo'lgan eritmadan shisha plastinkaga tomizib, qizdiriladi.
5.Hodisa kuzatiladi va reaksiya tenglamasi yoziladi.
6.Yuqoridagi tajribani rux oksidi bilan takrorlanadi.
Nazorat uchun savollar:

1. 
   Amfoter oksidlar deb nimaga aytiladi?
   
2. 
   Sodir bo'ladigan reaksiyalarning tezligi haqida qanday xulosa chiqarish mumkin.
   
3. 
   Qaysi oksidlar bilan ham shu reaksiyani amalga oshirish mumkin?
   

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MAVZU: KISLORODNING KIMYOVIY XOSSALARI, BIOLOGIK
AHAMIYATI VA ISHLATILISHI