Video: Exothermic zog yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib exothermic cov tshuaj tiv thaiv yog cov tshuaj tiv thaiv uas tso tawm zog los ntawm lub teeb lossis cua sov. Nws yog qhov rov qab ntawm cov tshuaj tiv thaiv endothermic. Qhia tawm hauv kev sib npaug tshuaj: reactants → khoom + zog.
Ib sab ntawm qhov no, piv txwv li cas ntawm cov tshuaj tiv thaiv exothermic?
Piv txwv ntawm Exothermic Reactions tej combustion tshuaj tiv thaiv . ib tug neutralization tshuaj tiv thaiv . rusting ntawm hlau (xeb steel wool nrog vinegar) lub thermite tshuaj tiv thaiv . tshuaj tiv thaiv nruab nrab ntawm dej thiab calcium chloride.
Ib tug kuj yuav nug, ua li cas koj paub yog nws exothermic los yog endothermic? Ib endothermic tshuaj tiv thaiv kom sov. Ib exothermic cov tshuaj tiv thaiv tso cua sov. Yog li yog qhov sib npaug ntawm cov enthalpies ntawm cov reactants ntau dua li cov khoom, cov tshuaj tiv thaiv yuav yog exothermic . Yog cov khoom sab muaj ib tug loj enthalpy, cov tshuaj tiv thaiv yog endothermic.
Yog li ntawd, puas exothermic tso tawm lub zog?
Exothermic cov tshuaj tiv thaiv yog cov tshuaj tiv thaiv lossis cov txheej txheem uas tso dag zog , feem ntau yog nyob rau hauv daim ntawv ntawm tshav kub los yog lub teeb. Hauv ib exothermic tshuaj tiv thaiv, lub zog raug tso tawm vim tag nrho zog ntawm cov khoom yog tsawg dua tag nrho zog ntawm cov reactants.
Dab tsi ua rau exothermic tshuaj tiv thaiv?
Ib exothermic tshuaj tiv thaiv tshwm sim thaum lub zog siv los rhuav tshem cov ntawv cog lus hauv cov khoom siv reactants (cov khoom pib) tsawg dua lub zog tso tawm thaum cov ntawv cog lus tshiab tau tsim nyob rau hauv cov khoom (cov khoom koj xaus nrog). Combustion yog ib qho piv txwv ntawm ib qho exothermic tshuaj tiv thaiv - Koj tuaj yeem hnov cov cua sov muab tawm yog tias koj tau ze dhau!
Pom zoo:
Lub zog thiab lub zog ua haujlwm yog dab tsi?
WORK = W = Fd. Vim tias lub zog yog lub peev xwm ua haujlwm, peb ntsuas lub zog thiab ua haujlwm hauv tib chav (N * m lossis joules). POWER (P) yog tus nqi ntawm lub zog tsim (lossis nqus) lub sijhawm: P = E / t. Fais fab lub SI unit ntawm kev ntsuas yog Watt, sawv cev rau tiam los yog nqus ntawm lub zog ntawm tus nqi ntawm 1 Joule / sec
Dab tsi yog qhov txawv ntawm daim ntawv cog lus lub zog thiab daim ntawv cog lus dissociation zog?
Qhov sib txawv tseem ceeb ntawm kev sib txuas ntawm lub zog thiab lub zog bonddissociation yog tias lub zog sib txuas yog qhov nruab nrab ntawm lub zog xav tau los rhuav tshem tag nrho cov kev sib txuas ntawm tib ob hom atoms nyob rau hauv ib qho chaw sib txuas whereas daim ntawv cog lus dissociation zog yog tus nqi ntawm cov hluav taws xob xav tau los rhuav tshem ib qho kev sib koom ua ke inhomolysis
Thaum ib yam dab tsi txias yog endothermic los yog exothermic?
Cov tshuaj tiv thaiv endothermic yog qhov tsis sib xws. Qhov no yog thaum cov tshuaj tiv thaiv pib txias dua thiab xaus rau kub, noj lub zog los ntawm qhov pib mus rau qhov kawg. Hauv cov tshuaj tiv thaiv endothermic, lub kaw lus nce cua sov thaum ib puag ncig txias. Nyob rau hauv ib qho exothermic cov tshuaj tiv thaiv, lub kaw lus poob cua sov thaum ib puag ncig cua sov
Dab tsi yog qhov ua kom lub zog ntawm cov tshuaj tiv thaiv exothermic?
Lub zog ua kom muaj zog kuj tseem raug txhais tau tias yog lub zog tsawg kawg nkaus uas yuav tsum tau pib ua cov tshuaj tiv thaiv tshuaj. Lub zog ua kom muaj zog ntawm cov tshuaj tiv thaiv feem ntau yog qhia los ntawm thiab muab nyob rau hauv units ntawm kilojoules ib mole. Cov tshuaj tiv thaiv exothermic yog cov tshuaj tiv thaiv uas tso tawm lub zog ntawm lub teeb thiab kub
Dab tsi yog qhov txawv ntawm lub zog siv zog thiab lub zog thauj khoom?
Raws li nrog cov dav hlau inclined, cov khoom yuav tsum tau txav mus los yog lub zog muaj zog los yog thauj khoom thiab kev siv zog yog lub zog muab tso rau hauv kev txav mus los ntawm lwm qhov kawg ntawm lub fulcrum