Dab tsi yog qhov sib xyaw ntawm cov dej khov thiab cov ntsev ntau hu ua?
Dab tsi yog qhov sib xyaw ntawm cov dej khov thiab cov ntsev ntau hu ua?

Video: Dab tsi yog qhov sib xyaw ntawm cov dej khov thiab cov ntsev ntau hu ua?

Video: Dab tsi yog qhov sib xyaw ntawm cov dej khov thiab cov ntsev ntau hu ua?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Teb: Qhov no sib tov yog hu ua anti-freezing agent. Nquag rooj ntsev yog tshuaj sodium chloride!!

Ib yam li ntawd, hom kev sib tov yog tsim los ntawm kev muab ntsev rau hauv dej khov?

Lub melting ntawm cov dej khov thaum ib ntsev ntxiv yog vim lub freezing point depression ntawm ib tug tov raws li piv nrog rau cov ntshiab solvent. Li no lub dej -Ice equilibrium yog hloov mus rau lub xeev ua kua, thiab cua sov yog muab los ntawm ib puag ncig kom txog rau thaum ib tug tshiab equilibrium yog tsim nyob rau hauv ib tug qis kub.

Ib sab saum toj no, dab tsi yog dej khov sib tov? Dej khov Hauv Dej Thaum koj ntxiv dej khov , los yog dej khov, mus rau cov dej ntshiab, koj tau tsim ib tug heterogeneous sib tov ntawm ib yam khoom ntshiab. Cov atoms nyob rau hauv dej khov raug kaw nyob rau hauv ib tug crystalline matrix uas nws cov atoms yog tsawg densely packed tshaj cov nyob rau hauv cov kua dej, ib tug tshwj xeeb khoom ntawm dej.

Hais txog qhov no, vim li cas cov neeg muag khoom kulfi siv cov dej khov thiab cov ntsev sib xyaw ua kom khov?

Vim hais tias impurity muaj nyob rau hauv dej khov , nws yog melting ntsiab lus txo. Yog li, kulfi cov neeg muag khoom siv cov dej khov thiab cov ntsev sib xyaw ua kom khov sib xyaw . Hom ntsev ua raws li impurity rau dej khov uas tsub kom lub melting point ntawm lub dej khov lub voos xwmfab uas ua rau muaj ntau qhov ntim ntawm qhov tshwj xeeb kub muaj peev xwm.

Cov dej khov thiab ntsev puas yog tshuaj lom neeg?

Ntsev tsis yaj dej khov . Yog lawm, yeej tsis muaj melting mus. Hloov chaw, ntsev tsim ib tshuaj tiv thaiv sab hauv dej khov.

Pom zoo: