Qhov sib txawv tseem ceeb ntawm azeotropic thiab eutectic yog tias lo lus azeotropic yog hais txog cov kua sib tov uas muaj qhov kub tsis tu ncua thaum lub sij hawm eutectic hais txog cov tshuaj sib tov uas yog cov kua uas tuaj yeem hloov mus rau ob theem khoom tib lub sijhawm. Thaum txias.
Cov ntsiab lus azeotropic thiab eutectic hais txog cov tshuaj sib tov, tab sis qee zaum cov ntsiab lus no kuj muaj cov ntawv thov sib txawv; e.g. lo lus eutectic yog qee zaum siv los hu ua tshuaj lom neeg, qhov kub thiab txias (eutectic temperature), lossis tshuab (eutectic system).
Azeotropic yog dab tsi?
Lub sij hawm azeotropic yog siv los ua lub npe sib xyaw ntawm cov kua uas muaj qhov kub tsis tu ncua vim tias cov vapor ntawm cov kua sib tov muaj tib yam li cov kua sib xyaw. Qhov kub ntawm qhov sib tov no tuaj yeem siab dua lossis qis dua ib qho ntawm cov khoom sib xyaw ua ke.
Yooj yim distillation tuaj yeem siv rau kev sib cais ntawm cov khoom sib xyaw hauv qhov sib xyaw no txij li qhov kub ntawm qhov sib xyaw azeotropic yog tas li. Li no, peb yuav tsum tau siv lwm yam kev kawm: siv ob kab distillation nrog sib txawv qib ntawm kev sib cais los yog ntxiv ib tug thib peb compound rau cov azeotropic sib tov thiaj li yuav hloov lub volatility thiab boiling point ntawm lub Cheebtsam.
Eutectic yog dab tsi?
Lo lus eutectic feem ntau yog hais txog tshuaj lom neeg cov tshuaj tiv thaiv uas muaj cov kua uas hloov mus rau hauv ob theem khoom tib lub sijhawm thaum txias. Ib qho eutectic system yog homogenous sib xyaw ntawm cov khoom uas tuaj yeem yaj los yog khov ntawm qhov kub thiab txias uas qis dua qhov melting point ntawm cov khoom hauv qhov sib tov. Ntxiv mus, lub sij hawm eutectic kub piav qhia txog qhov qis tshaj qhov ua tau melting kub rau txhua qhov sib xyaw ua ke uas koom nrog hauv kev tsim cov sib tov.
Thaum cua sov ib qho eutectic sib tov, cov lattice ntawm ib feem ntawm qhov sib tov yuav yaj ua ntej ntawm qhov kub ntawm eutectic. Txawm li cas los xij, thaum txias cov txheej txheem eutectic, txhua qhov sib xyaw hauv qhov sib xyaw ua kom khov, tsim cov lattice ntawm cov khoom ntawm qhov sib txawv. Solidification tshwm sim kom txog thaum tag nrho cov ntaub ntawv los ua cov khoom. Feem ntau, eutectic system muaj ob yam khoom; Yog li, ntawm eutectic kub, cov kua hloov mus rau hauv ob theem khoom nyob rau tib lub sijhawm thiab nyob rau tib lub sijhawm. Yog li, peb tuaj yeem sau npe hom tshuaj tiv thaiv no ua cov tshuaj tiv thaiv peb-theem. Qhov no yog ib hom tshuaj tiv thaiv theem; Piv txwv li, ib tug kua solidifies, tsim ib tug alpha thiab beta khoom lattices. Ntawm no, cov theem ua kua thiab cov theem khoom yog nyob rau hauv equilibrium nrog ib leeg; thermal equilibrium.
Qhov txawv ntawm Azeotropic thiab Eutectic yog dab tsi?
Qhov sib txawv tseem ceeb ntawm azeotropic thiab eutectic yog lub sij hawm azeotropic hais txog cov kua uas muaj qhov kub tsis tu ncua thaum lub sij hawm eutectic hais txog cov tshuaj sib tov uas yog cov kua uas tuaj yeem hloov mus rau hauv ob theem khoom tib lub sijhawm thaum txias. Ethanol hauv dej yog ib qho piv txwv ntawm kev sib xyaw azeotropic thaum sodium chloride hauv dej yog ib qho piv txwv ntawm eutectic system.
Cov duab hauv qab no qhia qhov sib txawv ntawm azeotropic thiab eutectic hauv daim ntawv tabular.
Summary – Azeotropic vs Eutectic
Cov ntsiab lus zeotropic thiab eutectic yog siv feem ntau hauv kev siv lub cev chemistry kom xa mus rau cov kua sib tov tshwj xeeb. Qhov sib txawv tseem ceeb ntawm azeotropic thiab eutectic yog tias lo lus azeotropic yog hais txog cov kua uas muaj qhov kub tsis tu ncua thaum lub sij hawm eutectic hais txog cov tshuaj sib tov uas yog cov kua uas tuaj yeem hloov mus rau hauv ob theem khoom tib lub sijhawm thaum txias.
