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ID number:339225
 
Author:
Evaluation:
Published: 29.11.2007.
Language: Latvian
Level: Secondary school
Literature: n/a
References: Not used
Extract

Fenoli ir aromātisko ogļūdeņražu atvasinājumi, kuriem
benzola gredzenā viens vai vairāki ūdeņraža atomi aiz-
g vietoti ar hidroksilgrupām.
Arī no toluola var atvasināt vielas ar vienu —OH grupu gre­dzenā, kuras pieder pie fenoliem. Sīs vielas sauc par krezoliem
Fenols reaģē ar aktīviem metāliem:
2C6H5OH + 2Na 2C6H5ONa + H2↑
Molekulas uzbūve. Fenola molekulā ir benzola gredzens, ar kura uzbūvi iepazināmies, mācoties par benzolu. Atšķirībā no piesātināto ogļūdeņražu radikāļiem (CH3—, C2H5— utt.) fenilradikālim C6H5— piemīt spēja pievilkt hidroksilgrupas skābekļa atoma elektronus.…

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