Video: Dab tsi ntawm cov khoom sib txuas sib txuas muaj nyob ntawm cov dej molecules?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Piv txwv li, dej molecules yog tuav ua ke los ntawm hydrogen bonds ntawm lub hydrogen atom ntawm ib molecule thiab oxygen atom ntawm lwm tus (daim duab: hydrogen daim ntawv cog lus). Hydrogen Cov ntawv cog lus yog lub zog muaj zog intermolecular thiab muaj zog dua li lwm cov dipole-dipole rog.
Ib yam li ntawd, koj tuaj yeem nug, hom kev sib cog lus dab tsi ntawm cov dej molecules?
Hydrogen daim ntawv cog lus yog daim ntawv cog lus nruab nrab hydrogen nyob rau hauv ib tug polar molecule thiab qhov tsis zoo them kawg ntawm lwm tus polar molecule . Hydrogen daim ntawv cog lus tso ob molecules los txuas ua ke ib ntus. Cov dej molecules yog tsim los ntawm ob lub hydrogen atoms thiab ib tug oxygen atom, tuav ua ke los ntawm polar covalent daim ntawv cog lus.
Ib tug kuj yuav nug, yog vim li cas lub zog intermolecular muaj nyob nruab nrab ntawm cov dej molecules? Dej muaj polar O-H bonds. Qhov tsis zoo O atoms nyiam qhov zoo H atoms nyob ze molecules , ua rau lub zog txawv txav ntawm cov dipole-dipole zog hu ua hydrogen bond. Cov hydrogen bonds yog lub zog tshaj zog , tab sis lwm hom intermolecular kev nyiam yog tseem muaj.
Kuj paub, dab tsi yog ib qho kev sib txuas lus sib txuas hauv dej?
Hydrogen Bonds Lub zog tshaj intermolecular zog in dej yog ib tug tshwj xeeb dipole daim ntawv cog lus hu ua hydrogen daim ntawv cog lus . Hauv dej , ib lub molecule tuaj yeem tsim txog li plaub hydrogen daim ntawv cog lus , nrog ib tug molecule rau txhua hydrogen atom thiab nrog ob hydrogen atoms ntawm qhov tsis zoo oxygen sab.
Dab tsi ntawm daim ntawv cog lus yog dej?
Dej yog ib tug polar molecule A dej molecule yog tsim thaum ob atoms ntawm hydrogen daim ntawv cog lus covalently nrog ib tug atom ntawm oxygen. Hauv covalent daim ntawv cog lus electrons sib koom ntawm atoms. Hauv dej kev sib koom tsis sib npaug. Cov pa oxygen atom nyiam cov electrons ntau dua li cov hydrogen.
Pom zoo:
Dab tsi yog qhov sib txawv ntawm cov rog yuav cuam tshuam rau kev sib cuam tshuam ntawm cov dej molecules?
1 Teb. Qhov tseeb, dej muaj tag nrho peb hom kev sib xyaw ua ke, nrog qhov muaj zog tshaj plaws yog hydrogen bonding. Txhua yam muaj London dispersion yuam cov kev sib cuam tshuam tsis muaj zog yog ib ntus dipoles uas tsim los ntawm kev hloov ntawm electrons nyob rau hauv ib lub molecule
Dab tsi yog ib qho piv txwv ntawm cov khoom sib txuas ntawm kev sib npaug?
Kev rho tawm (Tsis yog Commutative) Tsis tas li ntawd, kev faib, kev sib xyaw ntawm cov dej num thiab cov lej sib npaug yog ob qho piv txwv zoo uas tsis yog kev sib txuas
Dab tsi yog qhov sib txawv ntawm qhov sib txawv ntawm cov kab sib txuas thiab ntau qhov sib piv?
6. (2 lub cim) Qhov sib txawv ntawm cov kab sib txuas (kev sib piv) thiab ntau qhov sib piv yog dab tsi? Cov kab sib xyaw ua ke yog npaj sib piv; uas yog, tshwj xeeb txhais tau tias yog ua ke nyob rau hauv ntau txoj kev thiab contrasted nrog rau lwm yam kev sib txuas ntawm txhais tau tias
Dab tsi yog qhov zoo sib xws ntawm cov khoom thiab cov khoom sib txuas?
Cov ntsiab lus thiab cov tebchaw yog cov tshuaj homogeneous nkaus xwb thiab lawv muaj qhov sib xyaw tas li thoob plaws. Cov ntsiab lus thiab cov tebchaw tsis tuaj yeem sib cais rau hauv lawv cov khoom sib xws los ntawm kev siv lub cev. Cov tshuaj thiab cov khoom sib tov yog tsim los ntawm cov khoom sib txawv lossis cov atom sib txawv
Dab tsi yog qhov tseem ceeb tshaj plaws uas yuav tsum muaj rau cov kua dej ntws hauv cov kav dej Dab tsi lwm yam cuam tshuam rau cov dej ntws?
Thaum ib qho kev quab yuam sab nraud yog exerted rau ntawm cov kua uas muaj, qhov tshwm sim siab yog kis sib npaug thoob plaws hauv cov kua. Yog li txhawm rau kom dej ntws, dej xav tau qhov sib txawv siab. Cov kav dej kuj tuaj yeem cuam tshuam los ntawm cov kua dej, cov yeeb nkab loj, qhov kub thiab txias (cov kav dej khov), cov kua dej ntom ntom