Yuav ua li cas koj xam qhov boiling point elevation?
Yuav ua li cas koj xam qhov boiling point elevation?

Video: Yuav ua li cas koj xam qhov boiling point elevation?

Video: Yuav ua li cas koj xam qhov boiling point elevation?
Video: Top 10 Cooking Oils... The Good, Bad & Toxic! 2024, Lub peb hlis ntuj
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Qhov yooj yim dua kev sib npaug rau kev txiav txim kub point of a solution: delta T = mKb. Delta T hais txog qhov boil - point elevation , lossis ntau npaum li cas qhov kev daws teeb meem kub point yog tshaj ntawm cov kuab tshuaj ntshiab. Cov units yog degrees Celsius. Kb yog molal boil - point elevation tas li.

Tsis tas li ntawd, dab tsi ua rau qhov kub nce siab?

Boiling point nce yog cov kub hloov (nce) ntawm lub kub point ntawm ib qho hnyav ua rau los ntawm kev ntxiv ib tug solute. Yog tias qhov vapor siab qis dua, cov txheeb ze ntawm cov khoom ua cov pa roj tsawg. Qhov no nce ua kua boil ntawm qhov siab dua kub.

Ib tug kuj yuav nug, qhov twg muaj qhov kub siab tshaj plaws? Ntawm cov muab noble gases xenon muaj qhov kub siab tshaj plaws.

Tom qab ntawd, lo lus nug yog, dab tsi yog qhov kub siab ntawm qhov siab tsis tu ncua?

Lub proportionality tas li , Kb, hu ua molal boil - point elevation tas li . Nws yog ib tas li uas yog sib npaug rau qhov kev hloov hauv lub kub point rau 1-molal tov ntawm ib tug nonvolatile molecular solute. Rau dej , tus nqi ntawm Kb yog 0.512oC / m.

Yam khoom twg muaj qhov kub siab tshaj plaws?

Cov tshuaj lom neeg uas muaj qhov kub siab tshaj plaws yog Helium thiab cov khoom uas muaj qhov kub siab tshaj plaws yog Tungsten.

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