25- lab mashg’uloti. 12-guruh elementlari. Rux, kadmiy va simob birikmalari. Laboratoriya ishining maqsadi

12-tajriba. Qiyin eriydigan silikat tuzlarini olish
To‘rtta probirka olib, har biriga alohida-alohida 5-6 tomchidan quyidagi tuz eritmalaridan soling: kalsiy xlorid, kobalt (II) nitrat, qo‘rg‘oshin nitrat va mis sulfat. So‘ng har bir
eritmaga 3-4 tomchidan natriy silikat eritmasidan tomizib aralashtiring. Hosil bo‘lgan silikat tuzlarining rangiga e’tibot berib, reaksiya tenglamalarini molekulyar va ionli shaklda yozing.
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Xulosa._______________________________________________________________________________________________________________________________________________________________________________________________________________