Qhov sib txawv tseem ceeb ntawm Van der Waals thiab kev sib cuam tshuam hydrophobic yog tias Van der Waals kev sib cuam tshuam yog qhov kev nyiam ntawm cov molecules tsis-polar, hos hydrophobic kev sib cuam tshuam yog repulsion rog ntawm dej molecules thiab lwm yam molecules.
Muaj plaub hom tshuaj tiv thaiv loj: covalent bonds, ionic bonds, hydrogen bonds thiab Van der Waal kev sib cuam tshuam. Ntxiv rau qhov no, peb tuaj yeem soj ntsuam kev sib cuam tshuam ntawm cov dej molecules thiab lwm cov molecules hu ua hydrophilic interactions thiab hydrophobic interactions.
Vim li cas Van der Waals Interactions?
Van der Waals kev sib cuam tshuam yog cov tshuaj sib txuas ntawm cov tsis muaj polar molecules. Cov kev sib cuam tshuam no yog hom kev sib cog lus tsis sib xws. Lawv yog cov tsis muaj zog attraction zog ntawm ob lub atoms nyob rau hauv ob tug tsis-polar molecules. Ib qho kev sib cuam tshuam ntawm Van der Waals yog ib qho kev ntxim nyiam los yog kev tawm tsam uas yog tshwm sim los ntawm kev sib raug zoo hauv qhov hloov pauv ntawm cov polarizations nyob ze.
Daim duab 01: Van der Waals kev sib cuam tshuam
Van der Waals rog tshwm sim feem ntau ntawm cov khoom sib xws xws li hydrogen molecules thiab carbon dioxide molecules. Ib qho kev sib cuam tshuam ntawm ob tus nqi sib txawv: cov nqi zoo thiab tsis zoo. Hauv cov molecules tsis-polar, tsis muaj kev sib cais, yog li cov molecules zoo li muaj induced nqi rau lawv uas ua rau induced dipole. Thaum ob lub molecules los ze rau ib leeg, lub electron huab ntawm ib lub molecule repels lub electron huab ntawm lwm yam molecule, siv ib tug me ntsis zoo nqi ntawm cov molecule. Tom qab ntawd qhov kev them nqi zoo no nyiam cov huab cua tsis zoo electron uas nyob ze los ntawm molecule. Nov yog lub zog sib cuam tshuam.
Dab tsi yog Hydrophobic Interactions?
Kev sib cuam tshuam Hydrophobic yog kev tawm tsam ntawm cov dej molecules thiab lwm yam khoom. Nws yog hom kev sib cuam tshuam ntawm kev sib cuam tshuam ntawm hydrophilic (kev quab yuam ntawm dej molecules thiab lwm yam khoom). Hauv lo lus no, hydro" txhais tau tias "dej" thiab "phobic" txhais tau tias "kev ntshai". Yog li ntawd, peb tuaj yeem sau cov tshuaj uas tsis nyiam dej ua cov tshuaj hydrophobic. Cov tshuaj no tshem tawm cov dej molecules. Feem ntau, cov molecules tsis-polar qhia hom kev sib cuam tshuam vim cov dej molecules yog polar. Hauv lwm lo lus, cov tshuaj hydrophobic zoo li nyiam los yog cuam tshuam nrog lossis yaj hauv cov khoom tsis muaj polar xws li roj thiab hexane.
Daim duab 01: Cov nplooj yog hydrophobic yog li cov tee dej ua rau hauv cov duab kheej kheej kom txo qis kev sib cuag nrog qhov chaw.
Qee zaum, cov tshuaj hydrophobic muaj npe ua lipophilic tshuaj vim tias cov tshuaj no nyiam cov lipid lossis cov rog rog. Thaum cov tshuaj hydrophobic ntxiv rau hauv dej, cov tshuaj molecules zoo li tsim pawg los ntawm kev sib xyaw ua ke. Qhov no ua rau cov kuab tshuaj hydrophobic tseem ceeb hauv kev sib cais cov tsis-polar tebchaw los ntawm cov dej los yog polar daws.
Qhov txawv ntawm Van der Waals thiab Hydrophobic Interactions yog dab tsi?
Van der Waals rog thiab kev sib cuam tshuam hydrophobic yog ob hom tshuaj sib txawv. Qhov sib txawv tseem ceeb ntawm Van der Waals thiab kev sib cuam tshuam hydrophobic yog tias Van der Waals kev sib cuam tshuam yog kev nyiam ntawm cov tsis-polar molecules, whereas hydrophobic interactions yog repulsion rog ntawm dej molecules thiab lwm yam molecules. Hauv Van der Waals kev sib cuam tshuam, ib lub molecule tau txais kev txhawb nqa zoo thaum lwm cov molecule tau txais kev cuam tshuam tsis zoo thaum tsis muaj nqi sib cais hauv kev sib cuam tshuam hydrophobic.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm Van der Waals thiab kev sib cuam tshuam hydrophobic hauv daim ntawv.
Summary – Van der Waals vs Hydrophobic Interactions
Van der Waals rog thiab kev sib cuam tshuam hydrophobic yog ob hom tshuaj sib txawv. Qhov sib txawv tseem ceeb ntawm Van der Waals thiab kev sib cuam tshuam hydrophobic yog tias Van der Waals kev sib cuam tshuam yog kev nyiam ntawm cov tsis-polar molecules, whereas hydrophobic interactions yog repulsion rog ntawm dej molecules thiab lwm yam molecules.
