Qhov sib txawv tseem ceeb ntawm qhov chaw khov thiab qhov chaw khov kho kev nyuaj siab yog qhov chaw khov kho yog qhov kub ntawm cov kua ua kua, qhov chaw txias txias yog qhov txo qis ntawm qhov khov ntawm qhov hnyav vim qhov sib ntxiv ntawm ib qho. Solute rau hauv cov kuab tshuaj.
Qhov chaw khov yog qhov ntsuas kub ntawm qhov kev hloov pauv ntawm cov teeb meem tshwm sim los ntawm cov kua mus rau theem khoom. Feem ntau, nws zoo ib yam li lub melting point ntawm cov khoom uas ib tug khoom converts mus rau hauv nws cov kua xeev.
Dab tsi yog qhov taw qhia khov?
Qhov chaw khov yog qhov kub ntawm cov kua ua kua. Nyob rau ntawm qhov chaw khov, cov kua mus rau cov khoom hloov pauv ntawm cov theem ntawm cov teeb meem tshwm sim ntawm lub melting point, cov theem khoom hloov mus rau hauv cov kua theem. Raws li txoj cai, lub freezing point yog sib npaug rau lub melting point. Tab sis kev xyaum, peb tuaj yeem ua kua dej txias tshaj qhov chaw khov.
Peb tuaj yeem siv cov ntsiab lus khov thiab khov kho sib hloov, tab sis qee tus kws sau ntawv nyiam sib txawv ntawm ob nqe lus no vim tias khov tshwm sim vim qhov hloov pauv ntawm qhov kub thiab txias, thaum khov kho tuaj yeem tshwm sim vim kev hloov pauv hauv siab ib yam.
Paub qhov khov ntawm cov ntaub ntawv tseem ceeb heev hauv kev siv sib txawv, suav nrog kev khaws zaub mov, uas peb tuaj yeem tiv thaiv kev lwj ntawm cov zaub mov thiab kev loj hlob ntawm cov kab mob, khov cov kab mob los yog cov ntaub so ntswg thaum khaws cov ntaub so ntswg, thiab lwm yam.
Kev nyuaj siab ntxhov plawv yog dab tsi?
Txoj kev nyuaj siab yog qhov txo qis ntawm qhov khov ntawm qhov hnyav vim qhov sib ntxiv ntawm cov kuab tshuaj rau hauv cov kuab tshuaj. Qhov no yog ib qho cuab yeej sib koom ua ke, lub ntsiab lus khov kho qhov kev nyuaj siab tsuas yog nyob ntawm tus nqi ntawm cov ntsiab lus, tsis yog nyob ntawm qhov xwm txheej ntawm cov kua. Tom qab qhov chaw khov, kev nyuaj siab ntawm cov khoom tau tshwm sim, qhov chaw khov ntawm cov kuab tshuaj txo qis rau tus nqi qis dua li ntawm cov kuab tshuaj ntshiab. Kev nyuaj siab ntawm qhov dej khov yog qhov laj thawj vim li cas dej hiav txwv tseem nyob hauv cov kua hauv lub xeev txawm tias ntawm 0 ° C (qhov chaw khov ntawm cov dej ntshiab).
Txawm li cas los xij, cov ntsiab lus ntxiv yuav tsum yog cov kuab tshuaj tsis hloov pauv; Yog tias tsis yog, cov kuab tshuaj tsis cuam tshuam rau qhov chaw khov ntawm cov kuab tshuaj vim nws tau volatilized yooj yim. Lub tswv yim no kuj tseem siv tau los piav qhia cov kev hloov pauv hauv qhov chaw khov ntawm cov khoom sib tov. Finely hmoov cov khoom sib txuas muaj qhov qis qis dua li cov khoom sib xyaw ntshiab thaum muaj impurities (cov khoom sib tov sib xyaw).
Qhov chaw khov yog qhov kub ntawm qhov vapor siab ntawm cov kuab tshuaj thiab lub vapor siab ntawm cov khoom ntawm cov kuab tshuaj sib npaug. Yog hais tias ib qho tsis-volatile solute ntxiv rau qhov hnyav no, lub vapor siab ntawm cov kuab tshuaj ntshiab txo qis. Tom qab ntawd cov khoom ntawm cov kuab tshuaj tuaj yeem nyob hauv qhov sib npaug nrog cov kuab tshuaj txawm tias qhov kub thiab txias dua li qhov qub txeeg qub teg.
Dab tsi yog qhov sib txawv ntawm Lub Ncauj Ncauj thiab Lub Ncauj Ncauj Ncauj Ncauj?
Qhov chaw khov yog qhov ntsuas kub ntawm qhov kev hloov pauv ntawm cov teeb meem tshwm sim. Qhov sib txawv tseem ceeb ntawm qhov chaw khov thiab qhov khov ntawm qhov kev nyuaj siab yog qhov khov kho yog qhov hloov pauv ntawm cov theem ua kua rau hauv cov theem khoom vim qhov kev hloov pauv ntawm qhov kub thiab txias, qhov chaw txias txias yog qhov txo qis ntawm qhov khov ntawm qhov hnyav vim qhov sib ntxiv ntawm cov kuab tshuaj. rau hauv cov kuab tshuaj.
Cov hauv qab no infographic qhia txog qhov sib txawv ntawm qhov chaw khov thiab qhov chaw txias txias hauv daim ntawv teev npe.
Summary – Freezing Point vs Freezing Point Depression
Qhov chaw khov yog qhov ntsuas kub, thaum qhov kev tso tawm qhov kev nyuaj siab yog qhov tshwm sim. Qhov sib txawv tseem ceeb ntawm qhov chaw khov thiab qhov khov ntawm qhov kev nyuaj siab yog qhov chaw khov yog qhov kub thiab txias ntawm cov kua ua kua, qhov khov ntawm qhov kev nyuaj siab yog qhov txo qis ntawm qhov khov ntawm qhov hnyav vim qhov sib ntxiv ntawm cov kuab tshuaj rau hauv cov kuab tshuaj.
