Video: Yuav ua li cas koj pom qhov zaus ntawm qhov ua kom muaj zog?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov Arrhenius equation yog k = Ae^(-Ea/RT), whereA is the zaus los yog pre- exponential factor ande^(-Ea/RT) yog ib feem ntawm kev sib tsoo uas muaj txaus zog rau react (ie, muaj zog ntau tshaj orequal rau lub activation zog Ea) ntawm kub T.
Tsuas yog li ntawd, dab tsi yog qhov zaus ntawm qhov tshuaj tiv thaiv?
Kub Dependence ntawm Cov tshuaj tiv thaiv Hauv thawj qhov kev txiav txim tshuaj tiv thaiv , cov units ntawm pre-exponential yam yog reciprocal vib nas this. Thepre-exponential yam , A, yog qhov tsis tu ncua uas tuaj yeem muab tau los ntawm kev sim lossis lej. Nws tseem hu ua tus frequencyfactor , thiab piav txog tus naj npawb ntawm lub sij hawm ob moleculescollide.
Dab tsi yog qhov zaus ntawm chemistry? Cov zaus yam yog siv los piav txog tus nqi ntawm kev sib tsoo molecular uas tshwm sim nyob rau hauv lub tshuaj Cov tshuaj tiv thaiv zaus yam feem ntau tau sim ua kom paub tseeb tias qhov ntau ntawm a tshuaj cov tshuaj tiv thaiv (kub, ua kom lub zog thiab tus nqi tas li) haum rau daim ntawv ntawm Arrhenius equation.
Tom qab ntawd, ib tus tuaj yeem nug, koj yuav suav li cas lub zog ua kom muaj zog?
Tus nqi ntawm txoj kab nqes (m) yog sib npaug rau -Ea / R qhov R isa tas li sib npaug rau 8.314 J / mol-K. Cov activation zog k1, k2) thiab ob qhov sib thooj cov tshuaj tiv thaiv kub (T1, T2) nyob rau hauv lub Arrhenius Kev sib npaug (2).
Koj ua haujlwm li cas rau qhov ua ntej exponential?
- k yog tus nqi tas li, nyob rau hauv units ntawm 1M1−m−n⋅s, qhov m thiab n yog qhov kev txiav txim ntawm reactant A thiab B nyob rau hauv cov tshuaj tiv thaiv, feem.
- A yog qhov ua ntej-exponential, sib cuam tshuam nrog cov lej ntawm kev sib tsoo kom raug.
Pom zoo:
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