Video: Puas yog cov tshuaj tiv thaiv endothermic nce hauv qhov kub thiab txias?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yog tias tshuaj tiv thaiv yog endothermic raws li sau tseg, ib nce kub yuav ua rau pem hauv ntej tshuaj tiv thaiv tshwm sim, nce tus nqi ntawm cov khoom thiab txo cov nqi ntawm cov reactants. Txo cov kub yuav tsim cov lus teb rov qab. Ib qho kev hloov ntawm kub tsis muaj kev cuam tshuam rau athermal tshuaj tiv thaiv.
Ib yam li ntawd, koj tuaj yeem nug, puas yog qhov nce ntawm qhov kub ntawm qhov endothermic lossis exothermic?
Hauv thawj cov tshuaj tiv thaiv, lub zog muab tawm yog qhov tsis zoo thiab yog li cov tshuaj tiv thaiv yog exothermic . Txawm li cas los xij, ib nce kub tso cai rau lub cev kom nqus tau lub zog thiab yog li nyiam ib qho endothermic tshuaj tiv thaiv; lub equilibrium yuav hloov mus rau sab laug.
Tsis tas li ntawd, cov tshuaj tiv thaiv endothermic txo qhov kub thiab txias? Cov tshuaj tiv thaiv kab mob endothermic feem ntau tsim ib txo hauv kub . Hauv endothermic cov tshuaj tiv thaiv , daim ntawv cog lus energies ntawm cov reactants yog ntau dua li cov nyiaj tshuav ntawm cov khoom. Qhov no feem ntau ua rau a txo hauv kub ntawm tshuaj tiv thaiv sib tov. Tag nrho endothermic cov tshuaj tiv thaiv nqus zog.
Hais txog qhov no, puas exothermic cov tshuaj tiv thaiv nce kub?
Thaum tshav kub kub hloov pauv hauv tshuaj cov tshuaj tiv thaiv . Exothermic tshuaj tiv thaiv nyob rau hauv kev daws muab tawm lub zog thiab cov kub nce , thaum endothermic cov tshuaj tiv thaiv coj nyob rau hauv lub zog thiab lub kub txo. Bonds tau tawg thiab ua rau hauv cov tshuaj tiv thaiv.
Qhov kub li cas cuam tshuam rau endothermic thiab exothermic cov tshuaj tiv thaiv?
Thaum tshav kub kub yog nyob rau sab reactant ntawm qhov sib npaug. Thaum tshav kub kub yog tso tawm nyob rau hauv ib tug combustion tshuaj tiv thaiv . Txo qis kub yuav hloov equilibrium sab laug, tsim kom muaj dej ntau. A tshuaj tiv thaiv uas yog exothermic tso cua sov, thaum ib endothermic tshuaj tiv thaiv absorbs cua sov.
Pom zoo:
Vim li cas cov tshuaj tiv thaiv kev zom zaub mov hu ua hydrolysis cov tshuaj tiv thaiv?
Thaum lub sij hawm zom mov, piv txwv li, decompositionreactions zom cov zaub mov loj rau hauv cov me me los ntawm kev ntxiv cov dej molecules. Hom tshuaj no hu ua hydrolysis. Raws li dej absorbs heatenergy, qee lub zog yog siv los rhuav tshem hydrogenbonds
Qhov nqus thiab tso tawm ntawm lub zog cuam tshuam li cas rau qhov kub thiab txias thaum lub sij hawm muaj tshuaj tiv thaiv?
Nyob rau hauv endothermic cov tshuaj tiv thaiv cov enthalpy ntawm cov khoom yog ntau dua cov enthalpy ntawm cov reactants. Vim tias cov tshuaj tiv thaiv tso tawm lossis nqus lub zog, lawv cuam tshuam rau qhov kub ntawm lawv ib puag ncig. Exothermic cov tshuaj tiv thaiv cua sov ua rau lawv ib puag ncig thaum cov tshuaj tiv thaiv endothermic txias rau lawv
Cov tshuaj tiv thaiv dab tsi yog qhov tshuaj tiv thaiv neutralization?
Neutralization yog ib hom tshuaj tiv thaiv nyob rau hauv uas muaj zog acid thiab muaj zog puag react nrog ib leeg los tsim dej thiab ntsev
Dab tsi yog tshuaj lom neeg cov tshuaj tiv thaiv thiab cov tshuaj tiv thaiv lub cev?
Qhov sib txawv ntawm cov tshuaj tiv thaiv lub cev thiab cov tshuaj tiv thaiv tshuaj yog muaj pes tsawg leeg. Hauv cov tshuaj tiv thaiv tshuaj, muaj kev hloov pauv ntawm cov tshuaj hauv nqe lus nug; nyob rau hauv ib qho kev hloov ntawm lub cev muaj qhov sib txawv ntawm qhov tsos, tsis hnov tsw, los yog cov duab yooj yim ntawm cov qauv ntawm cov teeb meem yam tsis muaj kev hloov pauv hauv cov ntsiab lus
Qhov kub thiab kub ntawm cov tshuaj tiv thaiv cuam tshuam li cas?
Thaum tshav kub kub ntawm cov tshuaj tiv thaiv, tus nqi ntawm cov cua sov uas yuav tsum tau ntxiv los yog tshem tawm thaum lub sij hawm cov tshuaj tiv thaiv nyob rau hauv thiaj li yuav khaws tag nrho cov khoom nyob rau hauv tib lub kub. Yog tias qhov kub ntawm cov tshuaj tiv thaiv yog qhov zoo, cov tshuaj tiv thaiv tau hais tias yog endothermic; yog hais tias tsis zoo, exothermic