Guruh talabasi ning umumiy kimyo fanidan Laboratoriya mashg’ulotlari Daftari

Topshirdi:______________
LABORATORIYA ISHI № 3.
Sana:_____________
Mavzu: Normal, molyar va titr konsentrasiyali eritmalar tayyorlash
1 - tajriba.Osh tuzining 0,1 М 250 ml eritmasini tayyorlash.
Ishning maqsadi: Osh tuzining 0,1 М 250 ml eritmasini tayyorlash.
Asboblar: aniq o’lchov tarozi, o’lchov silindiri, o’lchovli tomizgich. KSL-1199, KSL-1105-1, KSL-1164-1, KSL-1178-1, KSL-1199
Reaktivlar: Osh tuzi, distillangan suv,suv.
Ishning mazmuni:Hisoblash: natriy xloridnirig gram-molekulasi 58,5 g ga teng; 0,1 g mоl 5,58 g tuz degan so'z, 250 ml da esa bu tuz 4 marta kam, ya'ni 5,58 : 4=1,4625 g bo'ladi. 1,46 g tuz tortib olamiz va uni 250 ml sig'imli kolbaga solamiz. Tuz аvvаl ozroq miqdordagi suvda eritiladi, so'ngra yana suv qo'shib, eritma kolbaning chizig'igacha yetkaziladi.


3-tajriba. BaCl₂ ning 0.5 n eritmasini tayyorlash.
Ishning maqsadi: Laboratori sharoitda BaCl₂ ning 0.5 n eritmasini tayyorlash
Reaktivlar: BaCl₂ ٠2H₂O, distillangan suv.
Asboblar: aniq o’lchov tarozi, o’lchov silindiri, o’lchovli tomizgich.
Ishning mazmuni: BaCl₂ ning 0,5n 90 ml eritmasini tayyorlash uchun nech gram tuz va suv kerak? BaCl₂ ٠2H₂O ni hisobga oling.
Hisob – kitobdan keyin BaCl₂ eritmasini tayyorlash uchun BaCl₂ ٠2H₂O dan qancha kerakligini bilib olib, o’lchov silindriga soling va kerakli miqdorda suv soling.
Xulosa:
Tajribada qanday jarayon sodir bo’ldi:________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Reaksiya tenglamasini yozing:_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________