Andijon viloyati andijon tumani umumta`lim maktabining 10 – “ ” sinf o`quvchisi

Sana
Laboratoriya ishi № 6
Oqsillarga xos rangli reaksiyalar.
I.Kerakli jixoz va reaktivlar: probirka, tuxum oqsili,natriy gidroksid, mis (II) sulfat, HNO₃
II.Ishning borishi:
1-tajriba Probirkaga 2ml og`sil modda eritmasidan quyib, 2 natriy ishqor; 1-2 tomchi mis kuporosi eritmasidan qo`shing ,qizil-binafsha bo`yalish ro`y beradi
2-tajriba Probirka 2 ml oqsil modda eritmasidan (bu eritma 1 dona tuxum oqini 150 ml suvda eritib tayyorlanadi) olib unga konsentrlangan HNO₃ dan 1-2ml qo`shning va bu aralashmani ohistalik bilan qizdiring. Bunda oqsil moddasi bir joyga to`planib oladi va sariq bo`yalish ro`y beradi.
Xulosa _____________________________________________________________
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