Video: Combustion tso tawm lub zog li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hydrocarbon fuels xws li methane (CH4) hlawv nyob rau hauv lub xub ntiag ntawm oxygen mus rau tsim tawm carbon dioxide thiab dej. Qhov no txheej txheem ntawm combustion tso tawm lub zog . Thaum twg zog yog tso tawm Thaum lub sij hawm cov tshuaj tiv thaiv tshuaj, nws tau hais tias yog EXOTHERMIC cov tshuaj tiv thaiv.
Yog li ntawd, dab tsi yog lub zog ntawm combustion?
Chemistry thiab Chemical Technology Lub tshav kub ntawm combustion ( zog cov ntsiab lus) ntawm natural gas yog tus nqi ntawm zog uas tau txais los ntawm kev kub hnyiab ntawm qhov ntim ntawm cov pa roj, ntsuas hauv British thermal units (Btu). Tus nqi ntawm cov nkev yog xam los ntawm nws cov ntsiab lus Btu.
Qhov thib ob, ntau npaum li cas lub zog raug tso tawm hauv combustion ntawm octane? Qhov kub ntawm combustion ntawm octane (C8H18, Mm = 114 g/mol) yog -5500 kJ/mol.
Hais txog qhov no, puas yog txhua qhov kev tawm tsam combustion tso tawm lub zog?
Combustion yog ib oxidation tshuaj tiv thaiv uas ua kom sov, thiab nws yog yog li ntawd ib txwm exothermic. Tag nrho tshuaj cov tshuaj tiv thaiv thawj zaug tawg daim ntawv cog lus thiab tom qab ntawd ua cov tshiab los tsim cov khoom tshiab. Breaking bonds yuav siv sij hawm zog thaum ua daim ntawv cog lus tshiab tso dag zog.
Vim li cas thiaj ua tiav combustion tso tawm ntau zog?
Thaum muaj ntau cov pa oxygen, cov khoom yog carbon dioxide thiab dej. Qhov zoo ntawm combustion tiav yog tias ntau zog yog tso tawm thiab tsis muaj cov pa phem lossis cov kua qaub raug tsim tawm. Ntau zog yog tso tawm thaum combustion tiav tshaj thaum tsis tiav combustion.
Pom zoo:
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
Lub zog tso tawm li cas hauv cov nroj tsuag?
Cov nroj tsuag tau txais lub zog los ntawm cov txheej txheem hu ua photosynthesis. Cov txheej txheem no siv lub hnub ci zog los hloov cov pa roj carbon dioxide thiab dej rau hauv lub zog ntawm cov carbohydrates. Qhov thib ob, lub zog ntawd yog siv los rhuav tshem cov pa roj carbon dioxide thiab tsim cov piam thaj, lub zog tseem ceeb hauv cov nroj tsuag
Lub zog tso tawm los ntawm nuclear fusion li cas?
Lub zog tso tawm hauv cov tshuaj tiv thaiv fusion. Lub zog raug tso tawm nyob rau hauv cov tshuaj tiv thaiv nuclear yog tias tag nrho cov huab hwm coj ntawm cov khoom tshwm sim tsawg dua li qhov loj ntawm qhov pib reactants. Cov hais a thiab b feem ntau yog cov nucleons, xws li protons lossis neutrons, tab sis feem ntau tuaj yeem yog cov nuclei
Vim li cas cov tshuaj tiv thaiv tso tawm lub zog?
Txhua yam tshuaj tiv thaiv muaj zog. Lub zog yog siv los rhuav tshem cov ntawv cog lus hauv cov reactants, thiab lub zog raug tso tawm thaum cov ntawv cog lus tshiab tsim hauv cov khoom. Zoo li cov tshuaj tiv thaiv combustion nyob rau hauv lub cub tawg, qee cov tshuaj tiv thaiv yuav tsum muaj zog tsawg dua los rhuav cov ntawv cog lus hauv cov reactants dua li tso tawm thaum daim ntawv cog lus tsim hauv cov khoom
Lub zog tso tawm los ntawm molecules li cas?
ATP. Thaum ib pab pawg phosphate raug tshem tawm los ntawm kev rhuav tshem phosphoanhydride daim ntawv cog lus hauv cov txheej txheem hu ua hydrolysis, lub zog raug tso tawm, thiab ATP hloov mus rau adenosine diphosphate (ADP). Ib yam li ntawd, lub zog tseem raug tso tawm thaum phosphate raug tshem tawm los ntawm ADP los tsim adenosine monophosphate (AMP)