Cov txheej txheem:
Video: Hom tshuaj tiv thaiv dab tsi yog alum synthesis?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Al (OH) 3 muab cov tuab, dawb, gelatinous precipitate ntawm aluminium hydroxide. Raws li ntau sulfuric acid ntxiv, lub precipitate ntawm Al (OH) 3 dissolves rau daim ntawv soluble Al3+ ions. Thaum kawg, cov crystals ntawm alum raug tshem tawm ntawm cov tshuaj los ntawm lub tshuab nqus tsev pom thiab ntxuav nrog cawv / dej sib tov.
Tom qab ntawd, ib tug kuj yuav nug, koj yuav ua li cas ua ke alum?
Ua kom tiav qhov tsim ntawm alum:
- Maj mam thiab ua tib zoo do 22.5 mL ntawm 4 M H2YOG4(aq) rau hauv cov lim hauv kwv yees li 5-mL feem. Saib xyuas thiab sau cov kev hloov pauv hauv cov lim dej.
- Siv lub phaj kub, kub lub acidified filtrate kom txog thaum tag nrho cov khoom dissolves.
- Cov kauj ruam cuam tshuam nrog sulfuric acid:
Tom qab, lo lus nug yog, hom tshuaj tiv thaiv dab tsi yog Al Koh h2o? Cov tshuaj tiv thaiv ntawm Al(s) hauv aqueous KOH yog ib qho piv txwv ntawm oxidation-txo lossis redox cov tshuaj tiv thaiv. Al hlau yog oxidized rau txhuas ion nrog tus lej oxidation ntawm +3 thiab hydrogen hauv KOH lossis hauv dej yog txo los ntawm tus lej oxidation ntawm +1 rau xoom hauv hydrogen gas.
Hauv qhov no, lub hom phiaj ntawm kev sib txuas ntawm alum lab yog dab tsi?
Lub hom phiaj ntawm qhov kev sim yog los tsim cov txhuas alum los ntawm txhuas hlau, potassium hydroxide thiab sulfuric acid . Lub synthesis yuav ua tiav nyob rau hauv ob theem ua ke raws li qhia nyob rau hauv cov tshuaj tiv thaiv (9-1) thiab (9-2). Tag nrho cov tshuaj tiv thaiv rau cov synthesis yog muab nyob rau hauv cov tshuaj tiv thaiv (9-3).
Yuav ua li cas muaj pes tsawg moles ntawm alum yuav ua tau theoretically?
Los ntawm moles , koj ua tau nrhiav grams los ntawm kev siv cov molar loj ntawm cov alum . Thaum kawg, rau % tawm los, nws yuav yuav tawm los tiag (12.77g) muab faib los ntawm cov theoretical yield (x 100%).
Pom zoo:
Dab tsi yog cov tshuaj tiv thaiv synthesis?
Cov tshuaj tiv thaiv synthesis yog ib hom tshuaj tiv thaiv uas muaj ntau yam reactants sib xyaw ua ib yam khoom. Synthesis tshwm sim tso tawm lub zog nyob rau hauv daim ntawv ntawm tshav kub thiab lub teeb, yog li lawv yog exothermic. Ib qho piv txwv ntawm cov tshuaj tiv thaiv synthesis yog tsim cov dej los ntawm hydrogen thiab oxygen
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
Ob lub tebchaw puas tuaj yeem siv los ua cov tshuaj reactants rau cov tshuaj tiv thaiv synthesis?
7. Ob lub ntsiab lus puas tuaj yeem siv los ua cov reactants rau cov tshuaj tiv thaiv synthesis? Yog tias muaj, muab tsawg kawg ib qho piv txwv los ntawm Qauv 1 los txhawb koj cov lus teb. Ob lub ntsiab lus thiab cov tebchaw tuaj yeem pom hauv cov khoom ntawm cov tshuaj tiv thaiv decomposition
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