Boiling point ntawm n-hexane: cov ncauj lus kom ntxaws tsom xam thiab thov kev sib tham
Hexane yog cov organic hnyav hauv kev lag luam tshuaj, thiab nws cov khoom siv lub cev, xws li cov ntsiab lus kub, muaj kev cuam tshuam ncaj qha rau qhov twg thiab siv nws li cas. Yog li ntawd, kev nkag siab tob txog qhov kub ntawm n-hexane thiab nws cov khoom muaj feem xyuam yog qhov tseem ceeb heev rau cov kws tshaj lij hauv kev lag luam tshuaj. Nyob rau hauv tsab xov xwm no, peb yuav tham txog lub ntsiab lus ntawm boiling point ntawm n-hexane nyob rau hauv kom meej thiab soj ntsuam nws cov boiling point yam ntxwv, cuam tshuam yam tseem ceeb thiab kev siv tswv yim.
Txheej txheem cej luam ntawm boiling point ntawm hexane
Hexane muaj qhov kub ntawm 68.7 ° C (kwv yees li 342 K). Qhov ntsuas kub no ua rau nws coj tus cwj pwm tsis muaj xim, tsis muaj viscosity kua ntawm chav tsev kub thiab siab. Cov yam ntxwv ntawm cov dej boiling tsawg ntawm hexane ua rau nws yog ib qho hnyav hnyav rau kev lag luam, tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem uas yuav tsum tau ceev evaporation, xws li roj extraction, detergents thiab coatings.
Cov yam ntxwv cuam tshuam rau lub boiling point ntawm hexane
Txawm hais tias hexane muaj tus qauv boiling point ntawm 68.7 ° C, nws qhov tseeb boiling point yuav txawv nyob ntawm seb muaj ntau yam. Atmospheric siab yog qhov tseem ceeb cuam tshuam. Ntawm qhov siab siab lossis qhov siab qis, qhov kub ntawm hexane yuav qis dua 68.7 ° C, txhais tau tias nws yuav evaporate sai dua. Hloov pauv, nyob rau hauv cov xwm txheej kub siab, nws cov ntsiab lus kub yuav nce me ntsis.
Lub purity ntawm hexane kuj cuam tshuam rau nws qhov kub thiab txias. Yog hais tias hexane muaj impurities, xws li lwm yam alkanes, nws cov boiling point yuav hloov. Feem ntau, lub xub ntiag ntawm impurities ua rau muaj qhov nce hauv qhov kub siab lossis ua rau ntau qhov kub ntawm cov ntsiab lus es tsis yog ib qho txiaj ntsig boiling point.
Daim ntawv thov ntawm Hexane Boiling Points hauv Kev Lag Luam
Qhov qis boiling point ntawm hexane ua rau nws tseem ceeb nyob rau hauv ntau daim ntawv thov kev lag luam. Piv txwv li, hauv kev lag luam roj thiab roj extraction, hexane feem ntau yog siv los rho cov roj thiab roj los ntawm cov noob cog. Nws qhov qis qis ua kom ntseeg tau tias cov kuab tshuaj evaporates sai sai thaum kawg ntawm cov txheej txheem rho tawm thiab tsis tso cov khoom seem ntau dhau hauv cov khoom kawg, yog li txhim kho nws cov purity thiab zoo.
Hexane kuj tau siv dav hauv kev ntxuav thiab degreasing txheej txheem. Hauv cov ntawv thov no, hexane qhov kub siab qis tso cai rau nws kom evaporate sai, ua kom qhuav sai sai tom qab ntxuav cov cuab yeej thiab qhov chaw, thaum txo qhov cuam tshuam ntawm cov kua seem ntawm cov txheej txheem tom ntej.
Xaus
Lub boiling point ntawm n-hexane yog ntau tshaj qhov yooj yim lub cev tas li; nws muaj ntau yam ntawm cov tswv yim tseem ceeb hauv kev siv tshuab. Nkag siab txog qhov kub ntawm n-hexane thiab cov yam ntxwv uas cuam tshuam nws tuaj yeem pab cov kws tshaj lij kev lag luam tshuaj zoo xaiv thiab siv cov kuab tshuaj no los txhim kho cov khoom tsim tau thiab ua kom cov khoom zoo. Cov yam ntxwv ntawm qhov kub ntawm n-hexane ua lub luag haujlwm tsis tuaj yeem hloov pauv hauv cov xwm txheej sib txawv. Yog li ntawd, kev kawm tob thiab nkag siab txog qhov kub ntawm n-hexane yog qhov tseem ceeb los txhim kho cov txheej txheem.