Kimyo fanidan laboratoriya mashg’ulotlari

FENOLLARNING XOSSALARI

Ishning bajarilishi

1- tajriba. Fenolning suvda eruvchanligi

Reaktivlar: Fenolkristallari, ko`klakmusqog`ozi.

Ishtartibi. Probirkaga 0,5 g atrofida fenol kristallaridan olib, ustiga 2-3 ml suv quying va chayqating. Bunda fenol suvda qisman erib, uning loyqa emulsiyasi hosil bo`ladi. Aralashmani chayqatib turib biroz qizdirilsa, fenol suvda tamomila erib ketadi. Probirka sovitilganda yana eritma loyqalanib, ikki qavatga ajraladi. Eritmadan ko`k lakmus qog`oziga bir tomchi tomizib, uning muhitini aniqlang.

2- tajriba. Fenolga temir (III)- хloridning ta`siri

Reaktivlar: fenolning suyultirilgan eritmasi, temir (III)-хloridning 3% li eritmasi.

Ishtartibi. Probirkaga fenol eritmasidan 2—3 ml quyib, unga 1 tomchi temir (III)- хloridning 3% li eritmasidan tomizilsa, fenol uchun хarakterli binafsha rang hosil bo`ladi.

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