Kimyo xonasida rioya qilinishi lozim bo'lgan mehnat xavfsizligi qoidalari

1-amaliy mashg'ulotda olingan bilimlarini mustahkamlash

Quyidagi o'zgarishlarni amalga oshirish uchun imkon beradigan reaksiyalar tenglamalarini yozing:
Ca(OH)2 -> CaC03 -> Ca(HC03)2 -> CaC03 -> CaCl2
5.Ohakli suvning tiniq eritmasidan 2—3 ml oling. Eritma loyqalangunga qadar uglerod (IV)-oksid o'tkazing.
Loyqalangan eritmani uchta probirkaga bo‘lib oling:

1. 
   1-probirkaga ohakli suv quying;
   
2. 
   2-probirkaga natriy karbonat eritmasidan quying;
   
3. 
   d) 3-probirkani qizdiring.
   

Amalga oshirilgan ishlarga tegishli kimyoviy reaksiya tenglamalarini tugallang
va kuzatiladigan o'zgarishlar yuzasidan xulosalaringizni bayon qiling:

1. 
   Probirkalardagi kristallarni aniqlash
   

1. 
   NaOH+ fenolftalein => ___________________________________________________________________________
   

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b)Na2CO3+2HCl=> _____________________________________________________________________________________
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d)NaCl+AgNO3=> ______________________________________________________________________
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Probirkalardagi tuzni aniqlash
a)KCl+ HCl / ______________________________________________________________________
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