Video: Koj siv qhov sib npaug Arrhenius li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yog koj xav tau siv qhov no kev sib npaug , tsuas yog nrhiav "ln" khawm ntawm koj lub laij lej. Koj ua tau siv qhov sib npaug Arrhenius los qhia cov nyhuv ntawm qhov kev hloov ntawm qhov kub thiab txias ntawm tus nqi tas li - thiab yog li ntawm tus nqi ntawm cov tshuaj tiv thaiv. Yog hais tias tus nqi tas li doubles, piv txwv li, kuj yuav tus nqi ntawm cov tshuaj tiv thaiv.
Ib yam li ntawd, cov mis rau kev ua kom lub zog yog dab tsi?
Kev txiav txim siab ua kom muaj zog. Daim ntawv ceeb toom tias thaum Arrhenius equation yog rearranged li saum toj no nws yog ib tug linear kab zauv nrog rau daim ntawv y = mx + b; y yog ln(k), x yog 1/T, thiab m yog -Ea/R. Lub zog ua kom muaj zog rau cov tshuaj tiv thaiv tuaj yeem txiav txim siab los ntawm kev nrhiav tus txoj kab nqes ntawm kab.
Tsis tas li ntawd, cov units rau K yog dab tsi? Los ntawm tus qauv ntawm units peb tuaj yeem hais tias rau cov tshuaj tiv thaiv ntawm kinetic order n, the units ntawm k yog: k = 1/tc^(n-1), nco ntsoov tias c yog tus nqi ib liter qhia nyob rau hauv loj los yog molarity thiab n yog qhov kev txiav txim kinetic.
Tom qab ntawd, dab tsi yog cov units ntawm kev ua kom lub zog hauv Arrhenius equation?
qhov twg k sawv cev rau tus nqi tas li, Ea yog cov activation zog , R yog cov roj tsis tu ncua (8.3145 J / K mol), thiab T yog qhov ntsuas kub hauv Kelvin. A yog lub npe hu ua qhov frequency factor, muaj units ua L mol-1 s-1, thiab coj mus rau hauv tus account qhov zaus ntawm cov tshuaj tiv thaiv thiab qhov ua tau ntawm qhov tseeb molecular orientation.
Tus nqi tas li k yog dab tsi?
Cov tus nqi tas li , k , yog proportionality tas li uas qhia txog kev sib raug zoo ntawm molar concentration ntawm reactants thiab cov tus nqi ntawm ib qho tshuaj tiv thaiv. Cov tus nqi tas li tuaj yeem pom kev sim, siv cov molar concentrations ntawm cov reactants thiab qhov kev txiav txim ntawm cov tshuaj tiv thaiv.
Pom zoo:
Koj yuav daws qhov kev sib npaug plaub npaug li cas siv txoj cai null factor?
Los ntawm qhov no peb tuaj yeem suav tias: Yog tias qhov khoom ntawm ob tus lej yog xoom, ces ib lossis ob tus lej yog xoom. Ntawd yog, yog tias ab = 0, ces a = 0 lossis b = 0 (uas suav nrog qhov ua tau tias a = b = 0). Qhov no hu ua Null Factor Law; thiab peb siv nws ntau zaus los daws qhov sib npaug ntawm plaub fab
Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
Kev daws qhov tsis sib npaug ntawm qhov sib npaug yog zoo ib yam li kev daws cov kab sib npaug. Qhov sib txawv tseem ceeb yog koj tig lub cim tsis sib xws thaum faib lossis muab faib los ntawm tus lej tsis zoo. Graphing linear inequalities muaj ob peb qhov sib txawv ntxiv. Qhov uas yog qhov ntxoov ntxoo muaj xws li qhov tseem ceeb uas qhov kev tsis sib xws ntawm cov kab tawm muaj tseeb
Koj tuaj yeem qhia tau li cas yog tias ob qhov sib npaug sib npaug?
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Puas yog txhua qhov sib npaug sib npaug sib npaug?
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Dab tsi yog qhov sib txawv ntawm cov kab lus sib npaug thiab qhov sib npaug sib npaug?
Cov kab lus sib npaug muaj qhov muaj txiaj ntsig zoo ib yam tab sis tau nthuav tawm nyob rau hauv ib hom ntawv sib txawv uas siv cov khoom ntawm cov lej xws li ax + bx = (a + b) x yog cov kab lus sib npaug. nruj me ntsis, lawv tsis yog 'sib npaug', yog li peb yuav tsum siv 3 kab sib luag hauv 'sib npaug' es tsis yog 2 raws li qhia ntawm no