Video: Hom tshuaj tiv thaiv twg yog qhov kub hnyiab ntawm cov nkev?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nqe lus piav qhia: thaum methane ( natural gas ) reacts nrog oxygen, qhov tshwm sim yog carbon di-oxide thiab dej, nrog rau cov cua sov, li no ua rau nws exothermic. tshuaj tiv thaiv.
Ib yam li ntawd, tib neeg nug, puas yog kev kub hnyiab ntawm cov pa roj carbon monoxide ua ke?
Kev kub nyhiab ntawm cov pa roj ntsha yog a ua ke cov tshuaj tiv thaiv . Cov pa roj Feem ntau muaj xws li Methane. Nws yog ib ua ke cov tshuaj tiv thaiv . Methane yog cov khoom tseem ceeb ntawm natural gas , ib qho khoom siv roj.
Ib tug kuj yuav nug, yog vim li cas yog burning ntawm natural gas yog exothermic cov tshuaj tiv thaiv? Teb: Lub zog raug tso tawm thaum daim ntawv cog lus ua kom carbon dioxide thiab dej. Hauv qhov no, ntau lub zog tso tawm ntau dua li muab tso rau hauv li ntawd tshuaj tiv thaiv yog exothermic . hlawv roj tso cua sov thiab sov txhua yam nyob ib puag ncig nws, yog li nws yog exothermic.
Ua kom pom qhov no, puas yog qhov kub hnyiab ntawm cov pa hauv qhov cub exothermic lossis endothermic?
Teb: (a) Cov txheej txheem “ natural gas hlawv ntawm a qhov cub yog a qhov cub ”yog ib exothermic txheej txheem thiab rau cov txheej txheem no muaj ib tug tsis zoo kos npe rau. (b) Cov txheej txheem "isopropyl cawv evaporating ntawm daim tawv nqaij" yog ib qho endothermic txheej txheem thiab rau cov txheej txheem no muaj ib tug zoo kos npe rau.
Puas yog natural gas xav tau oxygen los hlawv?
Nws tsis yog ib qho ntshiab ntsiab zoo li oxygen , tab sis ib tug sib tov ntawm cov pa uas hydrocarbon cov pa yog cov khoom uas combustible thiab tsim tshav kub. Cov pa roj faib los ntawm kev siv hluav taws xob sib txawv hauv kev sib xyaw. Cov khoom siv hluav taws xob ua kom sov yog tsim los ntawm cov ntsiab lus Carbon thiab Hydrogen.
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
Hom tshuaj twg pom nyob rau hauv cov khoom ntawm cov tshuaj tiv thaiv decomposition?
Cov tshuaj tiv thaiv decomposition tshwm sim thaum ib qho reactant tawg mus rau hauv ob lossis ntau yam khoom. Qhov no tuaj yeem sawv cev los ntawm kev sib npaug dav: AB → A + B. Cov piv txwv ntawm cov tshuaj tiv thaiv decomposition muaj xws li kev tawg ntawm hydrogen peroxide rau dej thiab oxygen, thiab kev tawg ntawm cov dej mus rau hydrogen thiab oxygen
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