Kimyo fanidan laboratoriya mashg’ulotlari

5-tajriba. Sellyulozaning kislotali gidrolizi

Reaktiv va materiallar : sellyuloza (filtr qog’oz), kons. H₂SO₄, NaOH ning 10 % li eritmasi, Feling suyuqligi; probirkalar, menzurka, isitish asbobi.

Probirkaga 4 – 5 ml kons. H₂SO₄ quyib, unga ozroq maydalab kesilgan filtr qog’oz tushiring va shisha Тayeqcha bilan aralashtirgan holda qog’ozni eriting. Hosil qilingan quyuq eritmani ohistalik bilan 20 ml suv solingan stakanga quying va 10 minut davomida qaynating. So’ngra stakandagi eritmani soviting, ishqor qo’shib neytrallang va unga Feling suyuqligi qo’shib qizdiring. Natijada miss (I)- oksidining cho’kmasi hosil bo’lishini kuzating.

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LABORATORIYA ISHI № 22

AMINOKISLOTALAR VA OQSILLARNING XOSSALARI

Ishning bajarilishi