Dab tsi yog enthalpy ntawm ib qho system?
Dab tsi yog enthalpy ntawm ib qho system?

Video: Dab tsi yog enthalpy ntawm ib qho system?

Video: Dab tsi yog enthalpy ntawm ib qho system?
Video: Yuav ua li cas qhov tsos thiaj dawb! DIY How to Lighten Dark Underarms! 2024, Kaum ib hlis
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Enthalpy yog ib tug thermodynamic khoom ntawm a qhov system . Nws yog tus lej ntawm lub zog sab hauv ntxiv rau cov khoom ntawm lub siab thiab ntim ntawm lub qhov system . Nws qhia txog lub peev xwm los ua cov haujlwm tsis siv tshuab thiab lub peev xwm tshem tawm cov cua sov. Enthalpy yog denoted li H; tshwj xeeb enthalpy npe h.

Tib neeg kuj nug, ua li cas koj xam enthalpy ntawm ib qho system?

Hauv cov cim, cov enthalpy , H, sib npaug cov sum ntawm lub zog sab hauv, E, thiab cov khoom ntawm lub siab, P, thiab ntim, V, qhov system : H = E + PV. Raws li txoj cai ntawm kev txuag hluav taws xob, kev hloov hauv lub zog sab hauv yog sib npaug kub pauv mus rau, tsawg dua cov haujlwm ua los ntawm, lub qhov system.

enthalpy txhais tau li cas rau kaw qhov system? Cov enthalpy ntawm a kaw homogeneous qhov system yog nws lub zog cardinal muaj nuj nqi, nrog natural statevariables nws entropy thiab nws lub siab.

Ua kom pom qhov no, enthalpy piv txwv li cas?

Piv txwv ntawm enthalpy kev hloov pauv suav nrog enthalpy ntawm combustion, enthalpy ntawm fusion, enthalpy ntawm vaporization, thiab tus qauv enthalpy kev tsim tawm.

Dab tsi yog enthalpy ntawm ib yam khoom?

Tus qauv enthalpy ntawm kev tsim yog ib qho kev ntsuas ntawm lub zog tso tawm los yog noj thaum ib tug mole ntawm ib yam khoom yog tsim nyob rau hauv tus qauv tej yam kev mob los ntawm nws pureelements. Lub cim ntawm tus qauv enthalpy kev tsim tawm ΔH f. Δ = A change in enthalpy .o. = A degree qhia tias nws yog tus qauv enthalpy hloov.

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