Ob lub tebchaw dawb huv puas tuaj yeem muaj qhov sib txawv?
Ob lub tebchaw dawb huv puas tuaj yeem muaj qhov sib txawv?

Video: Ob lub tebchaw dawb huv puas tuaj yeem muaj qhov sib txawv?

Video: Ob lub tebchaw dawb huv puas tuaj yeem muaj qhov sib txawv?
Video: Nkauj Ntseeg 2023 | "Vajtswv Txoj Kev Txiav Txim Yeej Raug Nthuav Tawm Puv Npo Lawm" | Gospel Choir 2024, Kaum ib hlis
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Tsis muaj ob lub tebchaw dawb huv tuaj yeem muaj qhov sib txawv . Ob lub tebchaw dawb huv tuaj yeem muaj qhov sib txawv . Ib qho piv txwv yog qhia nyob rau hauv lub rooj 1.1 qhov twg melting point rau m-toluamide thiab Methyl-4-nitro benzoate yog raws nraim ib yam (94-96 ºC).

Tsuas yog li ntawd, ob lub tebchaw sib txawv puas tuaj yeem muaj qhov sib txawv?

Yog tias tshuaj sib xyaw yog txawv ces cov melting point yuav ib txwm qis. Yog tias ob qho tib si yog zoo tib yam cov melting point nyob twj ywm ib yam . Kev siv a melting point apparatus thiab kev saib xyuas yog xav tau rau qhov no. Qhov kev sim no qhia qhov tseem ceeb ntawm melting point yam ntxwv hauv chemistry.

Kuj Paub, vim li cas cov ntsiab lus melting rau cov ntsiab lus ntshiab sib txawv? Ib yam khoom (khoom) uas muaj soluble impurities feem ntau yaj ntawm qis kub tshaj qhov ntshiab compound . Nws kuj tau yaj dhau ntau yam ntawm kub thiab hu ua " melting point kev nyuaj siab." Feem ntau, qhov tsawg dua qhov ntau ntawm melting kub , qhov siab dua kev huv ntawm tus qauv.

Hauv qhov no, Melting Point puas txaus los txheeb xyuas qhov sib xyaw?

khoom - nws melting point - rau txheeb xyuas nws los ntawm ob peb txoj hauv kev. Feem ntau, cov melting point ib leeg yuav tsis pab koj txheeb xyuas qhov sib xyaw . Ntau lab cov khoom organic tshuaj sib xyaw , thiab lawv melting cov ntsiab lus , paub. Tej zaum 10,000 ntawm cov no yuav muaj tib yam melting point raws li koj paub compound.

Yuav ua li cas ob hom ntshiab organic tebchaw yuav muaj tib lub boiling point?

- Vim ob qho tib si ntshiab organic ntawm ib yam qauv tuaj yeem muaj cov ntsiab lus sib txawv vim tsis ua raws li cov txheej txheem kom raug lossis glycerol siv tau kub. Yog hais tias qhov sib tov melts ntawm qis kub dua paub compound , koj tsis paub tsis yog tus tib compound . Lawv yog txawv.

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