Video: Yuav ua li cas koj ua qhov kev sim Golden Rain?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Muab lub hwj tso rau hauv qee qhov dej ntawm 60-70 ° C thiab tag nrho cov muaju yuav tsum yaj - txhua qhov chaw ntawm huab cua ua tau tshem tawm los ntawm qhov sib ntxiv ntawm ob peb tee ntawm cov kua qaub ntxiv. Raws li cov dej txias, stunning kub hexagonal crystals ntawm lead iodide pib crystallize muab cov ' nag kub 'effect.
Ib yam li ntawd, koj yuav ua li cas ua qhov kev sim Golden Rain?
Hauv cov iav sib txawv, yaj cov hmoov lead nitrate thiab potassium iodide hauv cov dej me me. Ntxiv me ntsis acetic acid rau cov tshuaj, tiv thaiv nws cov hydrolysis. Ua kom sov cov dej distilled ntxiv rau ~ 80 ° C. Sib tov cov kev daws teeb meem ntawm cov hlau lead nitrate thiab potassium iodide rau hauv lub khob loj.
Tsis tas li ntawd, vim li cas lead iodide daj? Nws kuj ua rau kev hloov xim sai, raws li cov lead iodide yog heev insoluble nyob rau hauv dej ntawm chav tsev kub. Thaum cov kev daws teeb meem tau ntxiv ua ke, lawv tam sim ntawd tsim ib qho kaj daj nag xob nag cua lead iodide . Cov lead iodide dissolving tsim ib qho xim tsis muaj xim ib zaug ntxiv.
Ib yam li ntawd, nws tau nug, yuav ua li cas tshwm sim hauv Golden Rain sim?
Cov nag kub Cov tshuaj tiv thaiv tshuaj ua kom pom qhov tsim ntawm cov khoom precipitate. Cov golden nag kev sim Nws suav nrog ob lub ntsiab lus ionic soluble, potassium iodide (KI) thiab lead (II) nitrate (Pb (NO)3)2). Lawv pib yaj nyob rau hauv cov dej sib cais, uas yog txhua yam tsis muaj xim.
Vim li cas cov hlau lead iodide yog tshuaj lom?
Toxicity . Lead iodide yog heev tshuaj lom rau tib neeg noj qab haus huv. Kev noj tshuaj yuav ua rau muaj ntau yam mob hnyav thiab mob ntev coj lom. Lead iodide tau pom tias yog carcinogen nyob rau hauv cov tsiaj hais tias tib yam yuav muaj tseeb nyob rau hauv tib neeg.
Pom zoo:
Yuav ua li cas tshwm sim hauv qhov kev sim Golden Rain?
Cov tshuaj tiv thaiv los nag kub ua rau pom kev tsim cov khoom precipitate. Kev sim los nag kub muaj ob lub ntsiab lus ionic soluble, potassium iodide (KI) thiab lead(II) nitrate (Pb(NO3)2). Lawv pib yaj nyob rau hauv cov dej sib cais, uas yog txhua yam tsis muaj xim
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