"Lucas 'reagent" yog cov tshuaj anhydrous zinc chloride hauv concentrated hydrochloric acid. Cov tshuaj no yog siv los faib cov cawv ntawm qhov hnyav molecular.
Lucas reagent yog dab tsi?
Zinc chloride hydrogen chloride | Cl3HZn - PubChem.
Vim li cas Lucas xeem siv?
Lucas xeem yog ua kom paub qhov txawv ntawm thawj, theem nrab thiab theem nrab cov cawv thiab cov cawv twg muab alkyl halide ceev tshaj plaws. Lucas test yog raws li qhov sib txawv ntawm cov tshuaj cawv nrog hydrogen halide Cov dej cawv hauv theem nrab thiab qib theem nrab ua rau muaj kev cuam tshuam nrog hydrogen halide (hydrochloric acid) ntawm tus nqi sib txawv.
Lucas reagent ua haujlwm li cas?
Lucas reagent hloov cawv rau alkyl chlorides: tertiary alcohols muab cov tshuaj tiv thaiv tam sim ntawd, qhia tias thaum cov kua dej cawv hloov pos huab; cov cawv thib ob feem ntau pom muaj pov thawj ntawm kev hnov mob hauv tsib feeb; Thawj cov cawv tsis ua rau muaj qhov tseem ceeb ntawm chav tsev kub.
Vim li cas ZnCl2 siv hauv Lucas reagent?
Cawv hauv cov organic tebchaw ua rau Lucas reagent thiab tsim Alkyl halides raws li cov khoom. Ua kom tiav cov kauj ruam los ntawm kauj ruam teb: \[ZnC{{l}_{2}}] yog Lewis acid vim muaj cov khoob d-orbitals ntawm Zinc … Cov tsim carbonium ion reacts nrog chlorine nyob rau hauv hydrochloric acid thiab tsim alkyl halide ua ib yam khoom.
