Video: Dab tsi yog txhais los ntawm tus qauv enthalpy ntawm cov tshuaj tiv thaiv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov txheem enthalpy ntawm tshuaj tiv thaiv (Dab ΔHr?) yog enthalpy hloov uas tshwm sim nyob rau hauv ib tug system thaum teeb meem yog hloov los ntawm ib tug muab tshuaj tshuaj tiv thaiv , thaum tag nrho cov reactants thiab cov khoom nyob rau hauv lawv txheem xeev. Rau ib tug generic tshuaj tshuaj tiv thaiv.
Yog li ntawd, 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.
Ib yam li ntawd, txhais li cas los ntawm lub sij hawm tus qauv enthalpy ntawm kev tsim? Cov txheem enthalpy ntawm kev tsim los yog txheem cua sov ntawm kev tsim ntawm ib qho kev sib xyaw yog qhov hloov ntawm enthalpy thaum lub sij hawm tsim ntawm 1 mole ntawm cov khoom los ntawm nws cov ntsiab lus, nrog rau tag nrho cov tshuaj nyob rau hauv lawv txheem xeev. Rau ib lub caij: daim ntawv uas lub ntsiab yog ruaj khov tshaj 1 bar ntawm siab.
Qhov thib ob, koj yuav suav li cas tus qauv enthalpy ntawm cov tshuaj tiv thaiv?
Cov txheem enthalpy ntawm tshuaj tiv thaiv , ΔH⊖rxn Δ H r x n ⊖, tau xam los ntawm summing txheem enthalpies ntawm kev tsim cov reactants thiab rho tawm tus nqi los ntawm cov sum txheem enthalpies ntawm kev tsim cov khoom.
Nws txawv ntawm tus qauv enthalpy ntawm cov tshuaj tiv thaiv li cas?
Nco ntsoov tias ib enthalpy hloov yog lub tshav kub hloov zuj zus los yog absorbed thaum a tshuaj tiv thaiv tshwm sim ntawm qhov siab tsis tu ncua. Cov txheem enthalpy pauv a tshuaj tiv thaiv yog cov enthalpy hloov uas tshwm sim thaum kev sib npaug Qhov ntau ntawm cov ntaub ntawv react nyob rau hauv txheem cov xwm txheej, thiab nrog txhua yam hauv nws txheem xeev.
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
Dab tsi yog enthalpy ntawm cov tshuaj tiv thaiv tshuaj?
Enthalpy ntawm cov tshuaj tiv thaiv. Thaum cov tshuaj tiv thaiv tshuaj, cov ntawv cog lus ntawm atoms tuaj yeem tawg, hloov kho lossis ob qho tib si kom 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 kev hloov nyob rau hauv enthalpy uas tshwm sim los ntawm ib tug tshuaj tiv thaiv yog lub enthalpy ntawm cov tshuaj tiv thaiv
Tus qauv qauv yog dab tsi Qhov txawv ntawm tus qauv qauv thiab tus qauv molecular yog dab tsi?
Cov mis mos molecular siv cov cim tshuaj thiab cov ntawv sau npe los qhia cov naj npawb ntawm cov atoms sib txawv hauv cov molecule lossis compound. Ib qho empirical formula muab qhov yooj yim tshaj plaws, tag nrho tus lej piv ntawm atoms hauv ib qho chaw. Cov qauv qauv qhia txog kev sib koom ua ke ntawm cov atoms hauv cov molecule
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