Video: Vim li cas ntsev hauv dej thiaj li hloov tshuaj?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yog vim li cas Dissolving Ntsev Yog ib Kev hloov tshuaj
Yog li ntawd, dissolving ntsev hauv dej yog a tshuaj hloov . Thaum qab zib yog yaj, cov molecules disperse thoob plaws hauv lub dej , tab sis lawv tsis ua hloov lawv tshuaj tus kheej.
Tib neeg kuj nug, vim li cas ntsev hauv dej thiaj li hloov lub cev?
Dissolving ib tug khoom nyob rau hauv cov kua, xws li lub rooj ntsev hauv dej , yog a hloov lub cev vim tsuas yog lub xeev ntawm qhov teeb meem tau hloov. Kev hloov ntawm lub cev feem ntau tuaj yeem thim rov qab. Tso cai rau dej mus evaporate yuav rov qab ntsev mus rau lub xeev khov. Nws tsis tau ua ke nrog cov dej vim a tshuaj tshuaj tiv thaiv.
Tsis tas li ntawd, kev daws teeb meem puas yog kev hloov tshuaj? Dissolving qab zib hauv dej yog ib qho piv txwv ntawm lub cev hloov . Vim li no: A tshuaj hloov tsim tawm tshiab tshuaj cov khoom. Yuav kom qab zib nyob rau hauv dej ua ib tug tshuaj hloov , ib yam dab tsi tshiab yuav xav tau. Cov tshuaj tuaj yeem hloov daim ntawv, tab sis tsis yog tus kheej.
Tsis tas li ntawd, ntsev ua li cas nrog dej?
Thaum twg ntsev yog tov nrog dej , cov ntsev dissolves vim covalent bonds ntawm dej muaj zog tshaj cov ionic bonds nyob rau hauv lub ntsev molecules. Dej molecules rub cov sodium thiab chloride ions sib nrug, rhuav tshem cov ionic daim ntawv cog lus uas tuav lawv ua ke.
Puas yog dej ntsev npau npau hloov lub cev?
Muaj ntau yam piv txwv yooj yim ntawm kev hloov ntawm lub cev , zoo li melting ice (khoom dej ) ua kua ces boiling ntawm dej tig kua rau chav (gaseous dej ). Ib qho piv txwv me ntsis nthuav dua yog kev tawg ntsev rau hauv dej.
Pom zoo:
Cov ntsia hlau puas yuav xeb sai dua hauv dej ntsev lossis dej tshiab?
Teb: Qhov corrosion ntawm hlau qhia tias muaj tshuaj hloov pauv hauv cov hlau. Rust (hydrous oxide) yog ib qho piv txwv ntawm qhov kev hloov no uas tshwm sim thaum hlau raug dej los yog huab cua ntub. Koj cov ntsia hlau hlau tiag tiag yuav xeb sai dua thiab hnyav hauv dej ntsev
Vim li cas thiaj muaj kev hloov pauv hauv tshuaj lom neeg?
Lub zog hloov pauv hauv cov tshuaj tiv thaiv tshuaj yog vim qhov sib txawv ntawm cov khoom siv hluav taws xob khaws cia ntawm cov khoom thiab cov reactants. Qhov no khaws cia tshuaj zog, los yog cov ntsiab lus kub, ntawm lub cev yog hu ua nws enthalpy
Vim li cas thiaj siv cov tshuaj tua kab mob hauv cov tshuaj distillation?
Lub hom phiaj ntawm kev sib tsoo granules Saib Lawv nres, uas qhov tshwm sim tam sim ntawd ntawm vapor npuas nyob rau hauv cov kua kub ua rau upwards splashing. Theanti-bumping granules ua raws li lub hom phiaj rau theformation ntawm vapor cia du boiling
Vim li cas cov lus ntsev tau yooj yim yaj hauv dej?
Lub rooj ntsev yaj nyob rau hauv dej vim hais tias cov polar dej molecules nyiam ob qho tib si zoo nqi sodium ions thiab cov tsis zoo chloride ions. Lwm cov ntsev yaj hauv dej, ib yam nkaus, tab sis qee qhov lawv yaj yooj yim dua lwm tus
Vim li cas evaporation ntawm dej yog hloov lub cev thiab tsis hloov tshuaj?
9 A. evaporation ntawm dej yog ib qho kev hloov ntawm lub cev thiab tsis yog tshuaj hloov vim nws yog ib qho kev hloov uas tsis hloov cov tshuaj xws li tshuaj hloov pauv, tsuas yog hloov lub cev. Plaub lub cev uas piav txog cov kua yog thaum nws khov, boils, evaporates, los yog condenses