Video: Dab tsi yog enthalpy ntawm cov tshuaj tiv thaiv tshuaj?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Enthalpy ntawm tshuaj tiv thaiv . Thaum tshuaj tiv thaiv , cov ntawv cog lus ntawm atoms tuaj yeem tawg, hloov kho lossis ob qho tib si los nqus lossis tso tawm lub zog. Lub tshav kub absorbed los yog tso tawm los ntawm ib tug system nyob rau hauv tas li lub siab yog hu ua enthalpy , thiab cov hloov hauv enthalpy uas tshwm sim los ntawm a tshuaj tiv thaiv yog cov enthalpy ntawm tshuaj tiv thaiv.
Kuj paub yog, dab tsi yog txhais los ntawm enthalpy ntawm cov tshuaj tiv thaiv?
Cov Thaum tshav kub kub (tseem paub thiab Enthalpy ntawm Reaction ) yog qhov kev hloov hauv lub enthalpy ntawm ib qho tshuaj tshuaj tiv thaiv uas tshwm sim ntawm lub siab tsis tu ncua. Nws yog ib chav ntsuas thermodynamic ntawm kev ntsuas muaj txiaj ntsig zoo rau kev suav cov nqi zog ntawm ib lub mole yog tso tawm lossis tsim tawm hauv tshuaj tiv thaiv.
Tsis tas li ntawd, koj ua li cas xam cov enthalpy ntawm cov tshuaj tiv thaiv? Siv cov qauv ∆H = m x s x ∆T daws. Thaum koj muaj m, qhov loj ntawm koj cov reactants, s, qhov tshwj xeeb kub ntawm koj cov khoom, thiab ∆T, qhov kub thiab txias hloov ntawm koj cov khoom. tshuaj tiv thaiv , koj npaj tau nrhiav tus enthalpy ntawm tshuaj tiv thaiv . Tsuas ntsaws koj qhov tseem ceeb rau hauv qauv ∆H = m x s x ∆T thiab multiply to solve.
Yog li ntawd, vim li cas peb thiaj ntsuas qhov enthalpy ntawm cov tshuaj tiv thaiv tshuaj?
Enthalpy yog tseem ceeb vim hais tias nws qhia peb ntau npaum li cas kub (zog) yog hauv ib qhov system. Kub yog tseem ceeb vim peb tuaj yeem tshem tawm cov haujlwm tseem ceeb ntawm nws. Nyob rau hauv cov nqe lus ntawm a tshuaj tiv thaiv , ib enthalpy hloov qhia peb ntau npaum li cas enthalpy tau ploj los yog tau txais, enthalpy txhais tau tias lub zog cua sov ntawm qhov system.
Dab tsi yog enthalpy?
Enthalpy yog qhov hloov pauv ntawm lub zog ntawm cov tshuaj lom neeg lossis cov tshuaj tiv thaiv. Txawm li cas los xij, enthalpy yog qhov tshwj xeeb vim nws tsis yog lub zog sab hauv hloov (q.) Nws kuj suav nrog lub zog xav tau los tawm tsam atmospheric siab. Enthalpy yog xoom rau cov ntsiab lus vim hais tias lawv nyob hauv lawv lub ntuj, hauv av.
Pom zoo:
Dab tsi yog txhais los ntawm tus qauv enthalpy ntawm cov tshuaj tiv thaiv?
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