Video: Vim li cas cov qauv ntawm cov dej ua rau nws muaj cov kuab tshuaj zoo?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Dej muaj peev xwm ntawm dissolving ntau yam khoom sib txawv, uas yog vim li cas nws yog xws li ib tug zoo kuab tshuaj . Dej molecules muaj ib tug polar kev npaj ntawm oxygen thiab hydrogen atoms-ib sab (hydrogen) muaj ib tug zoo hluav taws xob nqi thiab lwm yam (oxygen) muaj ib tug tsis zoo nqi.
Kuj paub, vim li cas polarity ua dej ua kuab tshuaj zoo?
Vim nws polarity thiab muaj peev xwm tsim hydrogen bonds, dej ua ib qho zoo heev kuab tshuaj , txhais tau hais tias nws tuaj yeem yaj ntau yam sib txawv ntawm cov molecules.
Tsis tas li ntawd, vim li cas dej thiaj li yaj tau ntau yam khoom? Dej yog hu ua universal hnyav vim ntau dua tshuaj yaj hauv dej dua li lwm yam tshuaj. Qhov no tau ua nrog polarity ntawm txhua tus dej molecule. Qhov no pab dej dissociate ionic compounds rau hauv lawv cov ions zoo thiab tsis zoo.
Ib tug kuj yuav nug, vim li cas nws tseem ceeb uas dej yog qhov hnyav?
Dej hu ua "universal kuab tshuaj "vim nws muaj peev xwm ntawm dissolving ntau tshaj li lwm yam kua. Qhov no yog tseem ceeb rau txhua yam muaj sia nyob hauv ntiaj teb. Nws txhais tau tias nyob qhov twg dej mus, los ntawm huab cua, hauv av, lossis los ntawm peb lub cev, nws yuav siv cov tshuaj muaj txiaj ntsig, minerals, thiab cov as-ham.
Dab tsi yog qhov hnyav ntawm cov dej?
Dej Cov Khoom Uas Muaj Zog . Dej , uas tsis tsuas yog dissolves ntau lub tebchaw tab sis kuj dissolves ntau tshaj li lwm yam kua, suav hais tias yog lub universal. kuab tshuaj . Lub polar molecule nrog ib nrab-zoo thiab tsis zoo nqi, nws yooj yim dissolves ions thiab polar molecules.
Pom zoo:
Dab tsi yog DNA zoo li cuam tshuam nws cov qauv tshuaj rau nws zoo li cas thaum muaj ntau ntawm nws yog clumped ua ke?
Hais txog nws cov qauv tshuaj rau nws zoo li cas thaum ntau nws yog clumped ua ke. DNA zoo li kab laug sab webs. DNA tau soluble hauv DNA extraction tsis yog li peb tsis pom nws. Thaum nws tau stirred rau hauv ethanol, nws clumped ua ke thiab tsim thicker thiab thicker strands loj txaus kom pom
Dab tsi nthwv dej zoo li cov cuab yeej ntawm lub teeb ua rau nws hloov kev taw qhia thaum nws txav ntawm ib nrab mus rau lwm qhov?
Refraction
Vim li cas cov polarity ntawm cov dej ua rau nws zoo rau kev thauj khoom?
Dej lub polarity tso cai rau nws kom yaj lwm yam polars yooj yim heev. Thaum cov khoom polar yog muab tso rau hauv dej, qhov zoo kawg ntawm nws cov molecules yog attracted rau qhov tsis zoo kawg ntawm cov dej molecules, thiab vice versa. Nto nro ua rau cov dej los ua ke hauv cov tee ntau dua li nthuav tawm hauv ib txheej nyias
Vim li cas CDCl3 yog siv los ua cov kuab tshuaj rau sau cov NMR spectrum ntawm ib qho kev sib txuas?
Nws tuaj yeem tau yooj yim sib cais los ntawm kev sib xyaw tom qab dissolving vim tias nws yog volatile nyob rau hauv cov xwm, thiaj li yuav yooj yim evaporated. Vim muaj cov tsis-hydrogen atom nws tsis cuam tshuam rau kev txiav txim siab ntawm NMR spectrum. Raws li nws yog cov kuab tshuaj deuterated yog li nws lub ncov tuaj yeem txheeb xyuas tau yooj yim hauv NMR nrog kev siv ntsuas TMS
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