Video: Yuav ua li cas tshwm sim hauv qhov kev sim Golden Rain?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov nag kub Cov tshuaj tiv thaiv tshuaj ua kom pom kev 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.
Ua li no, vim li cas lead II iodide daj?
Nws yog npaj los ntawm precipitating ib tug daws ntawm acetate los yog nitrate ntawm coj , nrog poov tshuaj iodide : cov nitrate ua kom ci ntsa iab daj colour. Txawm li cas los xij, vim qhov toxicity thiab instability ntawm cov compound nws tsis siv li ntawd.
Ib sab saum toj no, yog lead iodide daj? Lead iodide . Nqe lus piav qhia: Lead iodide zoo li ib daj crystalline khoom. Insoluble nyob rau hauv dej thiab denser tshaj dej.
Ib yam li ntawd, yog vim li cas lead iodide ntxuav nrog dej?
Thaum lub lead iodide tej zaum yuav insoluble nyob rau hauv dej Nyob rau hauv chav tsev kub, nws solubility nce marginally nrog kub. Txhawm rau muab nws yooj yim, thaum ionic compounds yaj hauv dej , lawv dissociate rau hauv lawv cov khoom ions. Qhov kev sib cais no tuaj yeem muab rau hauv lossis tshem tawm lub zog los ntawm ib puag ncig.
Puas yog lead iodide ua ntej?
Dej nag ntawm Coj (II) Iodide . Thaum ob peb crystals ntawm coj nitrate thiab poov tshuaj iodide ntxiv rau sab nraud ntawm Petri tais uas muaj dej deionized, tom qab ob peb feeb, ib kab ntawm cov xim daj coj (II) iodide precipitate daim ntawv hauv nruab nrab ntawm lub tais.
Pom zoo:
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