Guruh talabasi ning umumiy kimyo fanidan Laboratoriya mashg’ulotlari Daftari

Kerakli asbob va reaktivlar:
probirkalar, shtativ, pipetka, menzurka, stakan, probirka qizdirgich., temir (III) - xlorid, metil qizili, fenolftalein, natriy karbonat,lakmus qog’oz
Ishni bajarish tartibi
1- tajriba. Natriy karbonatning gidrolizi.
probirkaga 2 ml suv quying. Uning ustiga natriy karbonat kristallaridan bir necha dona soling. Natriy karbonat to’la erib ketgunga qadar aralashtiring. Hosil bo’lgan eritmaga fenolftalein tomizing. eritma rangiga etibor bering. Eritmani ozgina qizdiring.
Gidrolizlanish tenglamasini yozing.
2- tajriba. Temir (III) - xlorid gidrolizi.
probirkaga 3 ml suv quying. Unga 2 % li temir (III) xlorid eritmasidan 1 tomchi qo’shing. Eritma ustiga metil qizilini tomizing yoki lakmus qog’oz soling. Uning rangiga etibor bering va izohlang. Eritmani ozgina qizdiring va yana lakmus qog’ozi soling. Uning rangini aniqlang .
Yuqoridagi hodisalarni izohlang Reaksiya tenglamasini yozing.
Xulosa:
Tajribada qanday jarayon sodir bo’ldi:___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Reaksiya tenglamasini yozing:_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________