2-labaratoriya ishi

5-labaratoriya ishi.
KIMYOVIY REKASIYALARNING TURLARI
1.Birikish (ohakni so`ndirish).
Kimyoviy stakanga 50 ml suv quying va ustiga bir necha dona so`ndirilmagan ohak bo`lakchasidan tashlang. Qanday hodisa kuzatiladi? Olingan “sut” ni tindiring. Tindirilgan eritmaning tiniq qismidan probirkaga namuna olib, unga fenolftalien eritmasidan bir-ikki tomchi tomizing.
2.Parchalanish (malaxitning parchalanishi).
Probirkaga malaxit deb ataluvchi yashil rangli moddadan solib, probirkani shtativga mahkamlang. Probirkani modda solingan qismini spirt lampasi alangasi bilan qizdiring. Probirka og`ziga yonib turgan gugurtcho`pini yaqinlashtiring. Sodir bo`lgan barcha hodisalarni kuzatib, sababini tushuntiring.
3.O`rin olish (mis (II)-xlorid tuzi eritmasiga tozalangan temirni tushirish).
Probirkaning 1/4 qismiga qadar mis (II)-xlorid eritmasidan quying. Tozalangan temir mixni ipga bog`lab eritmaga tushiring. 2-3 minut o`tgach, mixni tortib oling. Mixning sirtidagi o`zgarishni tushintiring. Probirkaga ozroq temir qirindisidan soling. Birozdan so`ng eritma rangidagi o`zgarishiga e’tibor bering. Reaksiya tenglamasini yozing.

6-labaratoriya ishi.
OKSIDLARNING NAMUNALARI BILAN TANISHISH
Sizga berilgan oksidlar namunalari bilan tarnishing. Agregat holati, rangi va hidiga e’tibor bering hamda quyidagi jadvalni daftaringizga ko`chirib oling, to`ldiring.

Moddaning nomi	Kimyoviy formulasi	Agregat holati	Rangi	Hidi