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Chemistry

 Daudzvērtīga, vienvērtīga spirta, aldehīdu reakcijas
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ID number:232908
 
Author:
Evaluation:
Published: 18.02.2020.
Language: Latvian
Level: Secondary school
Literature: n/a
References: Not used
Extract

6. Fenola reakcija ar nātrija hidroksīdu
1. Mēģenē ieliek nedaudz fenola kristaliņu , pielej nedaudz ūdens,tad uzsilda līdz fenols izšķīst (veidojas duļķains šķīdums -emulsija)
2. Mēģeni atdzesē zem tekoša auksta ūdens , tad pievieno nedaudz nātrija hidroksīda līdz emulsija atkrāsojas .
Duļķojums izzūd un šķīdums kļūst dzidrs.!!!!!!
…

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