Video: Puas yog acetonitrile polar lossis tsis polar?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov tshuaj acetonitrile muaj 5.8 polarity index. Hydrocarbons yog tsis yog - polar yog li lawv yog cov kuab tshuaj tsuas yog rau lwm tus tsis yog - polar tshuaj. Tsis zoo li hydrocarbons, Ethyl Cawv muaj ob qho tib si polar thiab tsis yog - polar chemical pawg ntawm cov molecule.
Kuj nug, puas yog acetonitrile ntau polar dua methanol?
Nws yog ib qho hnyav hnyav rau ntau tus polar organiccompounds, nws yog pheej yig, thiab muaj nyob rau hauv siab purity. Tab sis nrog Cov tshuaj acetonitrile peb muaj a polar hnyav (tab sis tsis yog li polar raws li methanol ) uas yog aprotic. Cov txiaj ntsig koj tuaj yeem paub los ntawm kev siv Cov tshuaj acetonitrile nyob rau hauv qhov chaw ntawm methanol yog…
Tom qab ntawd, lo lus nug yog, dab tsi yog polar thiab nonpolar hnyav? Polar kuab tshuaj muaj lub sijhawm loj dipole (aka "cov nqi ib nrab"); lawv muaj cov ntawv cog lus ntawm atoms nrog cov electronegativities sib txawv, xws li oxygen thiab hydrogen. Tsis muaj polar solvents muaj cov ntawv cog lus ntawm atoms nrog cov electronegativities zoo sib xws, xws li carbon thiab hydrogen (xav tias hydrocarbons, xws li roj av).
Kuj tseem paub yog, vim li cas acetonitrile siv hauv HPLC?
Cov kuab tshuaj B feem ntau yog ib qho HPLC qib organicsolvent xws li acetonitrile tshuaj los yog methanol nrog 0.1% acid. Theacid yog siv txhawm rau txhim kho cov chromatographic ncov shapeand muab qhov chaw ntawm protons nyob rau theem rov qab LC / MS. Theacids feem ntau siv yog formic acid, triflouroaceticacid, thiab acetic acid.
Puas yog bh3 polar lossis nonpolar?
Txhua daim ntawv cog lus B-H hauv BH 3 yog polar / cov ntaub ntawv adipole vim tias B thiab H atoms muaj qhov sib txawv electronegativities. Cov duab ntawm cov molecule yog trigonal planar uas yog symmetrical, yog li cov dipoles / daim ntawv cog lus polarities tshem tawm. Yog li ntawd BH 3 molecule yog tsis polar.
Pom zoo:
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