Video: Vim li cas sodium thiaj li melting point siab?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Sodium tshuaj chloride muaj lub siab melting point vim muaj zog electrostatic attraction ntawm nws qhov zoo thiab tsis zoo ions; qhov no yuav tsum tau muaj cua sov ntau dua los kov yeej. Nws kuj muaj ib tug loj lattice qauv, uas txhais tau hais tias nws muaj ntau lab tus muaj zog ionic bonds.
Tsis tas li ntawd, sodium puas muaj cov ntsiab lus melting siab?
208 ° F (97.79 ° C)
Ib sab saum toj no, yog vim li cas sodium thiaj li melting point ntau dua poov tshuaj? Nyob rau hauv cov hlau, lawv muaj nyob li hlau ions nyob rau hauv lub hiav txwv ofdelocalised electrons. Txawm li cas los xij, txij li potassium muaj ib lub vojvoog loj tshaj li sodium , qhov attraction ntawm valenceelectron thiab cov nucleus tsis muaj zog, yog li nws yooj yim dua rau overcomethose rog hloov poov tshuaj xeev los ntawm kua togas.
Kuj tseem paub yog, yog vim li cas sodium chloride muaj lub siab melting point?
Sodium chloride muaj lub siab melting point vim lub lattice yog tsim los ntawm qhov zoo sodium ions thiab tsis zoo tshuaj chloride ions. Cov ions no nyiam ib leeg nrog lub zog electrostatic zog. Txhawm rau rhuav cov kev sib txuas ntawm cov ions kojjeed siab kub. Cov yaj kub nyob ntawm tus nqi ion.
Vim li cas cov hlau muaj qhov siab melting point?
Thaum a hlau melts los yog boils, qhov no yog kev hloov ntawm lub cev. Qhov no lub zog yog xav tau los kov yeej lub zog ntawm attraction ntawm lub hlau ions thiab delocalisedelectrons nyob rau hauv lub hlau . Qhov xav tau ntau zog, lub siab dua tus melting point los yog kub point.
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