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Video: Puas yog h3o+ Lewis acid lossis base?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yog, twv yuav raug hu! Lewis acids yog electron acceptors. Thaum lub H3O+ poob ib tug proton (H +), nws yuav tsum tau txais ib tug electron khub los ntawm tawg daim ntawv cog lus rau lub proton, yog li muab peb H2O thiab ua raws li ib tug Lewis acid . Los ntawm lub caij nyoog, txhua tus Bronsted-Lowry kua qaub (proton donors) yog Lewis acids , tab sis tsis yog lwm txoj kev.
Hais txog qhov no, puas yog h3o+ acid lossis base?
Cov H3O+ yog conjugate kua qaub ntawm H2O. Yog li H3O+ yog siv raws li ib tug shorthand rau ib tug proton nyob rau hauv aqueous tov. Hauv cov tshuaj uas tsis yog-aqueous, proton yuav tsim cov qauv sib txawv. Qhia tau tias H2O yog tsim los ntawm qhov sib npaug H + thiab OH- ions thiab yog amphoteric (yuav ua tau ib qho kua qaub los yog a puag ) muaj daim ntawv deprotonated (OH-).
Ib sab saum toj no, ch3coo yog Lewis acid los yog hauv paus? A puag yog ib yam khoom uas ua rau kom cov hydroxide concentration. Acid - hauv paus tshwm sim li conjugate kua qaub - puag khub. CH3COH thiab CH3 COJ - yog ib khub. Nws pub ib leeg-pair electrons rau BF3, lub Lewis acid thiab electron acceptor.
Tsis tas li ntawd, yog Hydronium yog Lewis acid?
Txawm tias cov hydronium ion yog lub npe Lewis acid Ntawm no, nws tsis yog nws tus kheej lees txais ib khub electron, tab sis tsuas yog ua raws li lub hauv paus ntawm proton uas ua haujlwm nrog cov Lewis puag.
Lub hauv paus muaj zog yog dab tsi?
Lub hauv paus muaj zog muaj peev xwm ua kom tiav dissociate hauv dej
- LiOH - lithium hydroxide.
- NaOH - sodium hydroxide.
- KOH - poov tshuaj hydroxide.
- RbOH - rubidium hydroxide.
- CsOH - cesium hydroxide.
- *Ca(OH)2 - calcium hydroxide.
- *Sr(OH)2 - strontium hydroxide.
- * Ba(OH)2 - barium hydroxide.
Pom zoo:
Lub cim Lewis rau Al yog dab tsi?
Tom qab ntawd kuv kos tus qauv Lewis dot rau Aluminium (Al). Lus Cim: Aluminium yog nyob rau hauv Pawg 13 (qee zaus hu ua Pawg III lossis 3A). Txij li thaum nws nyob hauv Pawg 3 nws yuav muaj 3 valence electrons. Thaum koj kos tus qauv Lewis rau Aluminium koj yuav muab peb 'dots' lossis valance electrons nyob ib ncig ntawm lub cim cim (Al)
Puas yog ch3ch3 yog Lewis acid lossis base?
CH3CH3 tuaj yeem yog Lewis puag, thiab BBr3 tuaj yeem yog Bronsted-Lowry acid. CH3CH3 tuaj yeem yog Lewis puag, BBr3 tuaj yeem yog Bronsted-Lowry acid, thiab CH3Cl tuaj yeem yog Lewis puag
Puas yog ch4 a Lewis acid lossis base?
Ib tug xov tooj ntawm pawg 14 elemental hydrides: CH4, SiH4, GeH4 & SnH4, yog inert rau Lewis acid thiab Lewis puag reagents. (Cov hom tuaj yeem raug oxidised thiab lawv raug cuam tshuam los ntawm radicals thiab diradicals.) Yog li methane yog Lewis puag tab sis, zoo li helium, nws yog ib qho tsis tshua muaj zog proton abstractor
Lewis qauv rau c3h4 yog dab tsi?
Txhua daim duab Lewis dot siv 16 valence electrons thiab sau lub plhaub sab nraud ntawm txhua lub atom. Txawm li cas los xij, cov atoms yuav raug teeb tsa thiab sib txuas sib txawv. Rau cov qauv C3H4 Lewis, suav tag nrho cov valence electrons rau C3H4 molecule (C3H4 muaj 16 valence electrons)
Hom kev sib cog lus twg yog tsim thaum Lewis acid reacts nrog Lewis puag?
Sib koom covalent bond