Kimyo fanidan laboratoriya mashg’ulotlari

CH₂CH₂  Br₂  CH₂Br – CH₂Br

1,2-dibrometan

3-tajriba. Etilenni oksidlash

Reaktiv va materiallar: kaliy permanganat eritmasi; probirka.

aralashmani qizdiring, ajralib chiqayotgan etilenni ozgina soda qo’shilgan kaliy permanganat eritmasi (2 ml) orqali o’tkazing. natijada eritmaning rangi yo’qoladi, chunki suvda eruvchan rangsiz etilenglikol hosil bo’ladi. hosil bo’ladigan qo’ng’ir rangli ikkilamchi mahsulot marganes (iv)-oksid kristallaridir. bu rang eritmaga ham ta’sir etgan bo’lishi mumkin.

4-tajriba. Etilenning yonishi

nay uchidan chiqayotgan etilen yondiriladi. etilenni yondirayotganda, uning alangasi metan alangasiga qaraganda ravshan bo’lishga ahamiyat bering. etilen alangasiga kiritilgan tigel qorakuya bilan qoplanadi.

etilen molekulasidagi uglerodning foiz miqdorini hisoblab toping.

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