Boiling point ntawm trichloromethane: Ib qho kev pom rau hauv cov tshuaj tseem ceeb no
Trichloromethane, tshuaj formula CHCl₃, feem ntau hu ua chloroform, yog ib qho tseem ceeb organic hnyav. Nws yog dav siv nyob rau hauv kev lag luam thiab lub chaw soj nstuam, thiab nws lub cev muaj zog, tshwj xeeb tshaj yog nws cov boiling point, yog ib tug tseem ceeb txiav txim ntawm nws daim ntawv thov cheeb tsam thiab kev nyab xeeb. Hauv daim ntawv no, peb yuav ua tib zoo saib qhov tob ntawm trichloromethane thiab txheeb xyuas nws qhov tseem ceeb hauv kev lag luam tshuaj.
Boiling point ntawm trichloromethane thiab nws lub cev tseem ceeb
Lub boiling point ntawm trichloromethane yog 61.2 ° C (los yog 334.4 K). Lub boiling point yog qhov kub ntawm cov kua hloov mus rau ib tug roj ntawm ib tug tej yam siab (feem ntau standard atmospheric siab, los yog 101.3 kPa). Nyob rau hauv cov ntaub ntawv ntawm trichloromethane, nws kuj tsis tshua muaj boiling point ua rau nws volatile heev nyob rau hauv chav tsev kub, uas muaj ib tug tseem ceeb rau nws siv nyob rau hauv kev lag luam tshuaj.
Cov yam ntxwv cuam tshuam rau lub boiling point ntawm trichloromethane
Lub boiling point ntawm trichloromethane yog cuam tshuam los ntawm ntau yam, tshwj xeeb tshaj yog cov intermolecular van der Waals rog thiab lub polarity ntawm lub molecule. Qhov loj electronegativity ntawm chlorine atoms nyob rau hauv lub trichloromethane molecule muab nws ib tug tej yam polarity, uas ua rau lub hav zoov ntawm tej yam dipole-dipole rog ntawm lub molecules. Lub xub ntiag ntawm cov rog intermolecular no tso cai rau trichloromethane kov yeej cov cohesive rog thiab hloov mus rau cov pa roj tsuas yog thaum qhov kub thiab txias. Yog li ntawd, nws cov ntsiab lus kub kub yog siab txheeb ze rau qee qhov tsis yog-polar molecules xws li methane (qhov kub ntawm -161.5 ° C) tab sis qis dua cov dej (qhov kub ntawm qhov kub ntawm 100 ° C), uas qhia txog nws qhov nruab nrab-lub zog intermolecular kev sib cuam tshuam rog.
Qhov tseem ceeb ntawm lub boiling point ntawm trichloromethane nyob rau hauv industrial daim ntaub ntawv
Lub boiling point ntawm trichloromethane yog ib qho tseem ceeb qhia rau nws siv nyob rau hauv kev lag luam. Nws qhov qis qis ua rau nws muaj txiaj ntsig zoo ntawm cov organic hnyav, tshwj xeeb tshaj yog rau cov txheej txheem uas yuav tsum tau evaporation sai. Piv txwv li, hauv kev tsim tshuaj lom neeg, trichloromethane feem ntau yog siv rau hauv kev rho tawm, tawg thiab ntxuav cov txheej txheem vim nws muaj peev xwm evaporate sai thiab nws muaj peev xwm yaj ntau cov organic tshuaj. Vim nws qhov kub tsis tshua muaj kub, qhov tsis muaj zog yuav tsum raug coj mus rau hauv tus account hauv kev tsim cov cuab yeej siv hauv kev lag luam, tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem uas cuam tshuam nrog distillation thiab hnyav rov qab, kom muaj kev nyab xeeb thiab ua haujlwm tau zoo.
Kev cuam tshuam ntawm qhov boiling point ntawm trichloromethane ntawm kev nyab xeeb
Lub boiling point ntawm trichloromethane kuj muaj kev cuam tshuam ncaj qha rau kev nyab xeeb ntawm nws cov cia thiab siv. Vim nws cov volatility siab nyob rau hauv chav tsev kub, nws nyhav tsim flammable thiab lom vapors nyob rau hauv cov huab cua. Qhov no yuav tsum muaj qhov cua zoo thiab siv cov thawv ntim khoom tsim nyog rau nws khaws cia thiab siv. Paub txog qhov kub ntawm trichloromethane tuaj yeem pab cov tuam txhab tshuaj lom neeg los tsim cov kev ntsuas kev nyab xeeb tsim nyog kom tsis txhob muaj kev sib tsoo evaporation thiab tso pa tawm vim qhov kub thiab txias.
Xaus
Kev tsom xam ntawm qhov kub ntawm trichloromethane tsis tsuas yog pab peb kom nkag siab zoo dua lub cev ntawm cov tshuaj no, tab sis kuj muab lub hauv paus tseem ceeb theoretical rau nws daim ntawv thov hauv kev lag luam tshuaj. Los ntawm nws cov qauv molecular mus rau nws cov kev siv, qhov kub ntawm trichloromethane ua lub luag haujlwm tseem ceeb hauv kev tsim cov txheej txheem tshuaj thiab kev tswj kev nyab xeeb. Los ntawm kev nkag siab tob txog qhov kub ntawm trichloromethane, peb tuaj yeem siv cov tshuaj no zoo dua thiab ua kom nws cov txiaj ntsig thiab kev nyab xeeb hauv ntau yam kev siv.