Qhov sib txawv tseem ceeb ntawm cov dej khov qhuav thiab kua nitrogen yog cov dej khov qhuav yog cov khoom siv ntawm cov pa roj carbon dioxide whereas cov kua nitrogen yog cov nitrogen hauv cov kua hauv lub xeev.
Peb hu cov dej khov qhuav ua "cardice". Thawj daim ntawv thov ntawm no compound yog raws li ib tug ua kom txias. Nws undergoes sublimation es tsis txhob liquefying. Cov kua nitrogen, ntawm qhov tod tes, yog nyob rau hauv lub xeev ua kua. Qhov no tshwm sim hauv lub xeev no ntawm qhov kub tsis tshua muaj siab. Nws tuaj yeem ua rau vaporization thaum boiling.
Dry Ice yog dab tsi?
Cov dej khov qhuav yog cov khoom siv ntawm cov pa roj carbon dioxide. Peb hu nws "cardice". Daim ntawv dej khov no muaj txiaj ntsig zoo dua li cov dej khov los ntawm cov dej vim tias cov dej khov qhuav no tshwm sim ntawm qhov kub thiab txias heev thiab tsis muaj qhov seem. Yog li ntawd, tib neeg siv daim ntawv no ntawm cov dej khov rau kev khaws khoom noj thaum peb tsis tuaj yeem tau txais cov tshuab cua txias. Yog li, qhov sib xyaw no tseem ceeb ua tus neeg ua haujlwm txias.
Daim duab 01: Dej khov qhuav
Cov khoom sib xyaw no ua rau sublimation ntawm −78.5 ° C, thiab yog li, nws tsis mus dhau lub xeev ua kua. Qhov no ua rau cov dej khov qhuav txaus ntshai heev vim tias tuav cov tshuaj no tuaj yeem ua rau kub hnyiab vim yog khov. Cov tshuaj no tsis muaj xim thiab tsis yog nplaim taws. Ntxiv mus, nws muaj ib tug qaub zesty tsw. Thaum yaj hauv dej, nws tuaj yeem txo cov pH ntawm cov tshuaj los ntawm kev tsim carbonic acid.
Liquid Nitrogen yog dab tsi?
Kua nitrogen yog cov ntsiab lus nitrogen hauv cov kua dej. Nws tshwm sim ntawm qhov kub thiab txias heev. Qhov kub ntawm qhov sib xyaw no yog -195.79 ° C. Daim ntawv ua kua no muaj ntau yam kev siv hauv kev siv cua txias thiab cryogenic. Peb tuaj yeem tsim cov khoom siv no los ntawm kev faib tawm ntawm cov cua liquefied.
Daim duab 02: Kua Nitrogen
Muaj nitrogen molecules uas muaj ob lub nitrogen atoms khi rau ib leeg ntawm covalent tshuaj bonds. Peb yuav tsum khaws cov kua no rau hauv cov thawv tshwj xeeb uas paub txog kev tsim cov siab hauv lub thawv.
Dab tsi yog qhov txawv ntawm Cov Dej Khov Qhuav thiab Kua Nitrogen?
Cov dej khov qhuav yog cov khoom siv ntawm cov pa roj carbon dioxide. Cov khoom no muaj cov pa roj carbon dioxide molecules uas muaj cov pa roj carbon atom txuas rau ob lub pa oxygen ntawm covalent bonds. Ntxiv mus, nws undergoes sublimation ntawm -78.5 ° C thiab hloov mus rau hauv lub xeev roj.
Liquid nitrogen yog lub ntsiab nitrogen hauv lub xeev ua kua. Nws muaj nitrogen molecules uas muaj ob lub nitrogen atoms sib koom ua ke ntawm covalent bonds. Tsis tas li ntawd, nws dhau mus vaporization ntawm −195.79 ° C thiab hloov mus rau hauv lub xeev roj.
Summary – Dry Ice vs Liquid Nitrogen
Cov dej khov qhuav thiab kua nitrogen yog qhov tseem ceeb heev ua cov khoom ua kom txias. Qhov txawv ntawm cov dej khov qhuav thiab kua nitrogen yog tias cov dej khov qhuav yog cov khoom siv ntawm cov pa roj carbon dioxide whereas cov kua nitrogen yog cov nitrogen hauv cov kua hauv lub xeev.
