txhawm rau txhawm rau txheeb xyuas cov ntsiab lus hauv cov organic tebchaw, lawv muaj hloov mus rau hauv lawv cov ntawv ionic. Qhov no yog ua los ntawm kev sib xyaw cov organic compound nrog sodium hlau. Cov ionic compounds tsim thaum lub sij hawm fusion yog muab rho tawm hauv aqueous tov thiab tuaj yeem kuaj tau los ntawm kev sim tshuaj yooj yim.
Lassaigne tshuaj npaj li cas?
Kev Npaj Sodium Fusion Extract (Lassaigne's Extract)
Ciav ib qho me me ntawm sodium qhuav rau hauv ib lub raj fusion. Tshav lub raj me ntsis ntawm lub qhov cub Bunsen kom cov sodium melts mus rau lub ci ntsa iab. Ntxiv ib pinch ntawm cov organic compound. Tshav kub nws maj mam pib nrog kom cov compound reacts nrog sodium hlau.
Vim li cas peb thiaj npaj sodium extract txhawm rau kuaj pom cov khoom ntxiv hauv cov organic compound?
Vim li cas cov sodium extract alkaline hauv qhov xwm txheej? Ans. Vim cov organic compound yog fused nrog sodium hlau thiab ces nws yog rho nrog dej. Cov hlau tsis muaj tshuaj tiv thaiv ua rau dej thiab tsim cov tshuaj alkaline.
Vim li cas sodium khaws cia hauv kerosene?
Sodium khaws cia hauv kerosene vim nws yog cov hlau uas muaj zog heev. … Kerosene roj tsis hnov mob nrog sodium thiab ua raws li ib tug barrier uas txwv nws cov tshuaj tiv thaiv nrog oxygen thiab noo noo.
Lassaigne method yog dab tsi?
The sodium fusion test, los yog Lassaigne's test, yog siv rau hauv kev tshuaj ntsuam xyuas rau qhov kev txiav txim siab ntawm qhov muaj nyob ntawmCov khoom txawv teb chaws, xws li halogens, nitrogen, thiab sulfur, nyob rau hauv cov organic compound. … Qhov kev ntsuam xyuas muaj cua sov cov qauv nrog cov hlau huv si, "fusing" nrog cov qauv.
