Video: Yuav ua li cas yog dej tsis muaj polar?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cohesiveness, adhesiveness, thiab nto nro: yuav txo vim tsis muaj qhov +/- polarity, dej yuav tsis tsim hydrogen bonds ntawm H20 molecules. Vim li ntawd, dej yuav tsis yog "bead" nce (skcking rau nws tus kheej), los yog skck rau lwm qhov chaw zoo, los yog tsim cov chaw uas tuaj yeem txhawb nqa me me ntawm qhov siab.
Yog li, yuav ua li cas yog tias dej tsis yog polar?
Ua polar muab dej nws muaj peev xwm yaj ntau yam yooj yim. Yog dej tsis polar , nws tsis tuaj yeem yaj lwm yam khoom thiab nws yuav tsis muaj peev xwm txhawb nqa lub neej hauv ntiaj teb raws li peb paub. Ntshiab dej kuj muaj pH ntawm 7. Qhov no txhais tau hais tias tus nqi ntawm hydrogen (H+) thiab hydroxyl (OH-) ions yog qhov sib npaug.
lub neej yuav txawv li cas yog dej tsis muaj polar? Ua nws tsis polar yuav hloov yuav luag txhua yam hais txog dej . Txawm yog dej yog linear (thiab yog li ib tug tsawg net polarity, zoo li carbon dioxide los yog diethyl ether), qhov xwm ntawm O-H daim ntawv cog lus yuav tso cai rau hydrogen bonding, cia cov kuab tshuaj cuam tshuam nrog polar solutes thiab cuam tshuam nrog ntau dua dej molecules.
Tom qab ntawd, lo lus nug yog, yuav ua li cas tshwm sim rau dej yog dej molecules tsis muaj polar?
Cov teebmeem ntawm Hydrogen Bonds Cov dej hydrogen bonds cuam tshuam cov khoom ntawm tsis muaj polar molecules , cov uas muaj carbon thiab hydrogen, hauv dej . Vim tsis muaj polar molecules tsis yooj yim yaj nyob rau hauv dej thiab yog hydrophobic, lawv tau nyem ua ke. Cov dej tsis tuaj yeem nkag los ntawm daim nyias nyias.
Yuav ua li cas yog tias dej tsis yog ib qho hnyav?
muaj dej tsis yog universal kuab tshuaj ib hnub dhau ib hnub cov khoom noj xws li ntsev hauv dej los yog qab zib hauv dej yuav yeej tsis muaj peev xwm yaj. qhov no yog nyob rau theem domestic. ntawm qhov pom loj dua kev sib cais ntawm cov tshuaj yuav yuav nyuaj heev.
Pom zoo:
Yuav ua li cas koj txiav txim siab yog tias daim ntawv cog lus yog polar tsis muaj lub rooj electronegativity?
Kauj Ruam 2: Txheeb xyuas txhua daim ntawv cog lus raws li polar lossis nonpolar. (Yog hais tias qhov sib txawv ntawm electronegativity rau cov atoms nyob rau hauv ib daim ntawv cog lus yog ntau tshaj 0.4, peb xav txog daim ntawv cog lus polar. Yog hais tias qhov sib txawv ntawm electronegativity tsawg dua 0.4, daim ntawv cog lus yog qhov tseem ceeb nonpolar.) Yog tias tsis muaj polar bonds, lub molecule yog tsis muaj polar
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