Video: Vim li cas ethyl acetate polar?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Polar molecule muaj daim ntawv cog lus dipoles, uas tsis tso tseg ib leeg. Yog li ntawd, CH3COOCH2CH3 muaj ob polar daim ntawv cog lus (CO thiab CO) uas lawv daim ntawv cog lus dipoles tsis thim ib leeg. Vim li no, ethyl acetate hmoov yog a polar compound.
Tsis tas li ntawd, vim li cas ethyl acetate insoluble hauv dej?
ethyl acetate hmoov Nws loj dua ethanol thiab muab cov pa oxygen rau polarity tab sis cov pa oxygen nyob hauv nruab nrab ntawm cov qauv ua rau nws nyuaj rau hydrogen bonds tsim thiab ua kom tsis muaj miscible. Ethyl acetate hmoov yog soluble hauv dej rau qhov kom muaj nuj nqis ntawm 8.3g raws li 100g dej.
Ib tug kuj nug, yog ethyl acetate hexane polar? Nco ntsoov tias hexas yog ho tsawg polar tshaj ethyl acetate hmoov . Raws li qhov feem pua (orratio) ntawm ethyl acetate hmoov nyob rau hauv qhov sib tov nce, lub polarity ntawm cov kuab tshuaj sib tov nce. 2.
Ib yam li ntawd, tib neeg nug, vim li cas ethyl acetate siv hauv TLC?
Ethyl acetate hmoov yog ib tug polar solvent, tab sis nws yog feem ntau siv hauv TLC . Kuv xav tias tag nrho cov ntsiab lus ntawm TLC yog cais cov polar compounds (mus tsawg, tsawg Rf) thiab nonpolarcompounds (mus deb, siab Rf).
Vim li cas acetone ntau dua polar dua ethyl acetate?
Acetone yog me ntsis polar ntau dua li ethylacetate tso cai rau kom ceev elution ntawm qee cov tebchaw. Lub ntsiab yog vim li cas siv acetone Raws li ib tug flash solvent yog tias nws tsis nqus ntawm luv wavelengths. Qhov no ua rau acetone pab tau rau gradient flash chro-matography ntawm cov tebchaw uas nqus ntawm 220nm los yog tsawg.
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