Puas ceg nce qhov kub?

Cov txheej txheem:

Puas ceg nce qhov kub?
Puas ceg nce qhov kub?

Video: Puas ceg nce qhov kub?

Video: Puas ceg nce qhov kub?
Video: Mob nrob qaum/ Mob duav yog vim li cas? 2024, Kaum ib hlis
Anonim

Qhov tseem ceeb uas yuav tsum tau xav txog ntawm no yog cov ntsiab lus kub kub qhia txog lub zog ntawm lub zog ntawm cov molecules. Qhov ntau lawv lo ua ke, ntau lub zog nws yuav siv los ua kom tawg rau hauv cov huab cua raws li cov pa roj. … Cov ntsiab lus kub nce ntxiv thaum cov pa roj carbon ntau ntxiv. Branching txo qhov kub hnyiab

Dab tsi yog qhov cuam tshuam ntawm ceg ntawm qhov kub?

Raws li cov ceg tau ua tiav hauv ib qho alkane nws qhov chaw qis qis, qhov no ua rau txo qis ntawm qhov kub hnyiabthiab nce hauv melting point, yog li peb tuaj yeem hais tias thaj chaw saum npoo ∝ melting. point.

Vim li cas cov ceg qis dua txhais tau tias kub dua?

Raws li ceg nce, thaj tsam ntawm cov molecule txo qis uas ua rau thaj tsam me me ntawm kev sib cuag. Yog li ntawd, Van der Waals quab yuam kuj txo qis uas tuaj yeem kov yeej ntawm qhov kub thiab txias. Li no, qhov kub ntawm cov saw hlau alkane txo qis nrog kev nce hauv ceg.

Puas branching nce boiling point hauv alkanes?

Yog li ntawd, cov ntsiab lus kub ntawm cov alkanes nce nrog molecular loj. Rau isomers, qhov ntau ceg ntawm cov saw, qhov qis ntawm qhov kub siab yuav yog.

Puas yog faib ncaj qha proportional rau boiling point?

Branching txo qhov kub hnyiab Yog li qhov nce ntawm thaj chaw saum npoo yuav ua rau muaj peev xwm ntawm cov molecules rau ib leeg. Branching nyob rau hauv molecules txo qhov chaw saum npoo yog li txo qhov txaus nyiam quab yuam ntawm tus kheej molecules. Raws li qhov tshwm sim, qhov kub kub txo qis.

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