Qhov ntom ntawm acetic acid: kev pom thiab kev tshuaj xyuas
Hauv kev lag luam tshuaj, acetic acid yog siv dav thiab tseem ceeb tshuaj. Rau cov kws tshaj lij ua haujlwm hauv kev lag luam tshuaj, kev nkag siab txog lub cev lub cev ntawm acetic acid, tshwj xeeb tshaj yog nws qhov ntom ntom, yog qhov tseem ceeb rau kev tsim qauv, kev tswj xyuas thiab kev ua kom zoo dua qub. Hauv daim ntawv no, peb yuav txheeb xyuas qhov ceev ntawm acetic acid kom ntxaws thiab sib tham txog nws qhov cuam tshuam thiab kev xav hauv kev siv tswv yim.
Txheej txheem cej luam ntawm cov yam ntxwv yooj yim thiab ceev ntawm acetic acid
Acetic acid (cov tshuaj formula: CH₃COOH), tseem hu ua acetic acid, yog cov organic acid uas muaj zog qaub saj thiab irritating tsw. Raws li ib qho tseem ceeb tshuaj raw khoom, acetic acid yog dav siv nyob rau hauv ntau lub teb xws li zaub mov, tshuaj, thiab tshuaj. Ntawm chav tsev kub (25 ° C), acetic acid muaj qhov ntom ntawm 1.049 g / cm³. Tus nqi no qhia tau tias acetic acid hnyav dua me ntsis hauv nws cov kua hauv lub xeev txheeb ze rau dej (qhov ntom ntawm 1 g / cm³).
Cov nyhuv ntawm qhov kub ntawm qhov ntom ntawm acetic acid
Qhov ntom ntom, ib qho tseem ceeb ntawm lub cev ntawm cov khoom, feem ntau hloov nrog qhov kub thiab txias. Qhov ntom ntawm acetic acid yog tsis muaj kev zam. Raws li qhov kub thiab txias, cov thermal txav ntawm acetic acid molecules intensifies thiab lawv molecular spacing, uas ua rau ib tug maj mam txo nyob rau hauv ceev. Piv txwv li, ntawm 40 ° C qhov ceev ntawm acetic acid yog hais txog 1.037 g / cm³, thaum nyob rau ntawm 20 ° C nws yog ze rau 1.051 g / cm³. Cov cuab yeej no tseem ceeb heev hauv kev siv tswv yim, tshwj xeeb tshaj yog thaum lub sijhawm txhaj tshuaj thiab kev tswj xyuas cov tshuaj tiv thaiv, qhov twg cov nyhuv ntawm qhov kub ntawm qhov ntom ntawm acetic acid yuav tsum raug coj mus rau hauv tus account kom ntseeg tau tias cov txheej txheem ruaj khov thiab cov khoom zoo.
Qhov tseem ceeb ntawm acetic acid ntom nyob rau hauv cov ntawv thov kev lag luam
Nyob rau hauv cov txheej txheem tsim tshuaj, qhov ceev ntawm acetic acid tsis tsuas yog cuam tshuam rau nws cov cia thiab thauj, tab sis kuj ncaj qha cuam tshuam rau tus txheej txheem piv thiab cov khoom ua tau zoo. Hauv kev npaj cov kev daws teeb meem, kev paub tseeb ntawm qhov ntom ntawm acetic acid pab txiav txim siab qhov sib piv ntawm cov kuab tshuaj thiab cov kuab tshuaj, thiab yog li ua kom zoo dua cov tshuaj tiv thaiv. Thaum lub sijhawm khaws cia thiab thauj, qhov ceev yog qhov tseem ceeb hauv kev txiav txim siab lub peev xwm thiab nqa lub peev xwm ntawm cov thawv kom muaj kev nyab xeeb thiab kev lag luam.
Acetic acid density ntsuas thiab cov qauv
Hauv kev xyaum ua lag luam, acetic acid ntom ntom feem ntau yog ntsuas siv cov cuab yeej xws li lub raj nqus dej tshwj xeeb, ntab hom gravimeters lossis vibrating tube densitometers. Cov kev ntsuas no tso cai rau qhov ceev ntawm acetic acid kom raug txiav txim siab thiab siv rau kev tswj kom zoo thiab kev ua kom zoo. Cov txheej txheem thoob ntiaj teb rau qhov ceev ntawm acetic acid feem ntau yog raws li kev tswj xyuas qhov kub thiab txias, yog li qhov kub thiab txias stability kuj yog ib qho tseem ceeb rau kev txiav txim siab thaum ntsuas.
Cov ntsiab lus
Qhov ntom ntawm acetic acid, uas yog ib qho ntawm nws lub cev muaj zog, muaj kev cuam tshuam loj heev rau ntau daim ntawv thov hauv kev lag luam tshuaj. Los ntawm kev nkag siab tob thiab ntsuas qhov tseeb ntawm acetic acid ntom, cov txheej txheem tsim khoom tuaj yeem tswj tau zoo dua, cov khoom lag luam tuaj yeem ua kom zoo dua qub, thiab kev nyab xeeb ntawm kev cia thiab kev thauj mus los tuaj yeem ua kom ntseeg tau. Txawm hais tias hauv kev tshawb fawb hauv chav kuaj lossis kev tsim khoom lag luam, kev tswj hwm ntawm acetic acid ntom ntom yog ib qho tseem ceeb ntawm kev ua kom muaj kev ua haujlwm zoo ntawm cov txheej txheem tshuaj.
Los ntawm kev soj ntsuam saum toj no, peb tuaj yeem pom meej tias kev nkag siab thiab kev paub txog qhov ntom ntawm acetic acid tsis tsuas yog pab txhim kho kev tsim khoom, tab sis kuj txo cov khoom pov tseg thiab cov nqi, yog li siv qhov zoo ntawm kev sib tw hnyav hauv kev ua lag luam.