Video: Qhov twg muaj ntau dua enthalpy 2cl lossis cl2?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Re: Enthalpy
Vim lub Cl 2 yuav tsum nqus lub zog ntawm ib puag ncig los ua 2 Cl ib , qhov no txhais tau hais tias lub zog ntawm 2 Cl ib yog ntau dua tshaj li ntawm Cl 2 , yog li delta H yog qhov zoo.
Hais txog qhov no, dab tsi yog enthalpy ntawm cl2?
Standard Enthalpies ntawm Tsim cov Gaseous Atoms
| Atom | Δ Hf°(g) kJ/mol |
|---|---|
| Cov pa roj carbon | 717 |
| Cerium | 422 |
| Cesium | 79 |
| Chlorine | 121 |
Qhov thib ob, cl2 G yog dab tsi? Molar loj ntawm Cl 2 ( g yog 70,9060 g /mol. Hloov ntawm Cl 2 ( g ) hnyav thiab moles. Compound. Moles.
Ua qhov no hauv kev txiav txim siab, puas yog cl2 rau 2cl exothermic?
Piv txwv li 2 Cl 2 . Tsuas yog los ntawm cov ntaub ntawv no peb tuaj yeem txiav txim siab tias qhov kev tawm tsam tom ntej yog exothermic vim hais tias cov Cl molecules yog khi thiab lub zog yog tsim thaum bonds raug tsim. Yog li ntawd, qhov rov qab cov tshuaj tiv thaiv yog endothermic raws li nws siv lub zog los rhuav tshem Cl 2 daim ntawv cog lus.
Koj pom enthalpy li cas?
Siv cov mis ∆H = m x s x ∆T los 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 tshuaj tiv thaiv, koj tau npaj rau nrhiav tus enthalpy ntawm cov tshuaj tiv thaiv. Tsuas yog ntsaws koj qhov tseem ceeb rau hauv cov qauv ∆H = m x s x ∆T thiab muab faib los daws.
Pom zoo:
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