Video: Dab tsi yog kev siv cov catalyst?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov siv ntawm a catalyst yog los hloov qhov nrawm ntawm cov tshuaj tiv thaiv tshuaj los ntawm availing lwm txoj hauv kev uas yuav tsum tau ua kom qis zog dua li qhov qub. Nyob rau hauv thiaj li ua ntau reactant molecules tuaj yeem hla qhov barrier qis thiab muab cov khoom.
Hais txog qhov no, dab tsi yog qhov piv txwv ntawm catalyst?
Ob lub molecules ntawm hydrogen peroxide yuav tsim ob lub molecules ntawm dej thiab ib lub molecule ntawm oxygen. A catalyst Cov poov tshuaj permanganate tuaj yeem siv los ua kom cov txheej txheem no. Cov catalytic converter nyob rau hauv ib lub tsheb muaj platinum, uas ua hauj lwm raws li ib tug catalyst hloov cov pa roj carbon monoxide, uas yog tshuaj lom, mus rau carbon dioxide.
Dab tsi yog lub luag haujlwm ntawm catalyst hauv tshuaj tiv thaiv? A catalyst yog ib yam khoom uas yuav muab ntxiv rau a tshuaj tiv thaiv kom nce tshuaj tiv thaiv tus nqi yam tsis tau txais kev noj haus hauv cov txheej txheem. Catalysts feem ntau ceev a tshuaj tiv thaiv los ntawm kev txo cov kev ua kom lub zog los yog hloov cov tshuaj tiv thaiv tshuab. Enzymes yog cov proteins uas ua raws li catalysts hauv biochemical cov tshuaj tiv thaiv.
Ua raws li qhov kev pom no, catalysts ua haujlwm li cas?
A catalyst ua haujlwm los ntawm kev muab txoj hauv kev hloov pauv rau cov khoom siv tshuaj tiv thaiv. Tus nqi ntawm cov tshuaj tiv thaiv yog nce ntxiv raws li txoj kev lwm txoj hauv kev no muaj lub zog ua kom qis dua li cov tshuaj tiv thaiv txoj kev tsis kho los ntawm cov catalyst . Lub disproportionation ntawm hydrogen peroxide tsim dej thiab oxygen, raws li qhia hauv qab no.
Dab tsi yog qhov zoo catalyst?
Cov hlau zoo li platinum thiab nickel ua zoo catalysts vim tias lawv adsorb muaj zog txaus los tuav thiab qhib cov reactants, tab sis tsis yog li ntawd cov khoom tsis tuaj yeem tawg.
Pom zoo:
Dab tsi yog kev siv cov saw hlau nuclear siv rau?
Nuclear chain reaction. Nuclear chain reactions yog cov tshuaj tiv thaiv uas tau txais lub zog nuclear, feem ntau los ntawm nuclear fission. Cov kev cuam tshuam ntawm cov saw hlau no yog qhov muab cov chaw tsim hluav taws xob nuclear nrog lub zog uas tom qab ntawd hloov mus ua hluav taws xob siv los ntawm tib neeg
Dab tsi yog qhov teeb meem loj tshaj plaws ntawm kev siv cov kev tshawb fawb txog kev sib raug zoo?
Tej yam tsis zoo los yog kev tshawb fawb txog kev sib raug zoo muaj xws li: a. Lawv tsis tuaj yeem siv los tsim kom muaj kev sib raug zoo-thiab-tshuaj los yog kev coj ntawm kev cuam tshuam
Cov xim dab tsi yog cov hlwb feem ntau ua ntej siv thawj cov xim rau cov txheej txheem Gram stain?
Ua ntej, siv lead ua violet, thawj stain, yog siv rau lub tshav kub-tso smear, muab tag nrho cov hlwb xim liab
Dab tsi yog qhov sib npaug siv los xam tag nrho cov khoom siv hluav taws xob siv?
Cov mis uas txuas lub zog thiab lub zog yog: Zog = Lub Zog x Sijhawm. Chav tsev ntawm lub zog yog joule, lub zog ntawm lub zog yog watt, thiab chav tsev ntawm lub sijhawm yog qhov thib ob
Dab tsi yog qhov txawv ntawm cov khoom siv organic thiab cov khoom siv organic?
Dab tsi yog qhov txawv ntawm cov khoom siv organic thiab organic teeb meem? Organic khoom yog txhua yam uas tseem muaj sia nyob thiab tam sim no nyob rau hauv lossis hauv av. Rau nws los ua cov organic teeb meem, nws yuav tsum tau decomposed rau hauv humus. Humus yog cov khoom siv organic uas tau hloov dua siab tshiab los ntawm cov kab mob mus rau lub xeev tsis muaj zog