Koj xam cov kev hloov theem li cas?
Koj xam cov kev hloov theem li cas?

Video: Koj xam cov kev hloov theem li cas?

Video: Koj xam cov kev hloov theem li cas?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Lub peb hlis ntuj
Anonim

Yog tias theem hloov yog nruab nrab ntawm cov khoom thiab kua cov mis zoo li q = mΔH fus thiab ΔH fus yog hu ua cua sov ntawm fusion. Yog tias theem hloov yog nruab nrab ntawm cov kua thiab roj cov qauv zoo li q = mΔ vap ua thiab ΔH vap ua yog hu ua cua sov ntawm vaporization.

Tom qab ntawd, dab tsi yog cov theem hloov pauv uas tso tawm lub zog?

Kev piav qhia: Muaj ob theem kev hloov pauv uas lub zog cua sov tso tawm: Condensation : Thaum cov roj condenses rau cov kua kom muaj nuj nqis ntawm lub zog hloov los ntawm cov tshuaj mus rau tshav kub hu ua Heat of Vaporization los yog Δ Hvap. Raws li cov pa roj cua txias, cov khoom qeeb qeeb, thiab cov ntaub ntawv ua kua.

Ib tug kuj yuav nug, dab tsi theem muaj lub siab tshaj plaws enthalpy? gas

Kuj Paub, qhov twg ntawm cov kev hloov pauv hauv qab no yog qhov hloov pauv endothermic?

Fusion, vaporization, thiab sublimation yog endothermic cov txheej txheem, whereas khov, condensation, thiab deposition yog exothermic txheej txheem. Hloov ntawm xeev yog cov piv txwv ntawm theem hloov , los yog theem kev hloov pauv. Tag nrho theem hloov yog nrog kev hloov nyob rau hauv lub zog ntawm ib tug system.

Koj txhais li cas enthalpy?

Enthalpy yog ib qho khoom siv thermodynamic ntawm ib qho system. Nws yog tus lej ntawm lub zog sab hauv ntxiv rau cov khoom ntawm lub siab thiab ntim ntawm qhov system. Nws qhia txog lub peev xwm ua haujlwm tsis yog siv tshuab thiab lub peev xwm tso tawm cua sov. Enthalpy yog denoted li H; tshwj xeeb enthalpy npe h.

Pom zoo: