Hlau hydroxide 3

Lub inorganic compound yog hlau hydroxide 3 muaj cov tshuaj mis Fe (OH) 2. Nws yog mus rau ib tug series ntawm amphoteric sib txuas ntawm hlau, uas yog yeej los ntawm cov khoom uas yog raug bases. Nyob rau hauv view ntawm no lub substance yog ib tug dawb muaju uas thaum lub caij nyoog raug cov tawm sab nraud maj tsaus ntuj. Muaj variants ntawm greenish muaju. Nyob rau hauv lub neej txhua hnub substance yuav soj ntsuam txhua tus nyob rau hauv daim ntawv ntawm greenish deposits rau cov hniav hlau, uas qhia pib ntawm tus txheej txheem xeb - hlau hydroxide 3 ua hauj lwm pab raws li ib tug ntawm cov intermediate theem ntawm tus txheej txheem.

Qhov xwm ntawm tus compound muaj raws li amakinita. Qhov no crystalline mineral, apart hlau muaj ntau impurities ntawm magnesium thiab manganese, tag nrho cov ntawm cov tshuaj muab amakinitu txawv ntxoov - los ntawm daj-ntsuab rau daj ntsuab, nyob ntawm seb qhov feem pua ntawm ib tug caij. Lub hardness ntawm cov mineral yog 3.5-4 rau lub Mohs scale units, thiab ib tug ntom ntawm txog 3 g / cm³.

Lub cev thaj chaw ntawm lub substance yuav tsum muaj xws li nws tsis tshua tsawg solubility. Nyob rau hauv lub rooj plaub uas lub hlau hydroxide 3 yog rhuab, nws yog decomposed.

Qhov no tshuaj yog heev kom nquag plias thiab ua num ua ke nrog ntau lwm yam thiab sib txuas. Yog li, piv txwv li, muaj lub thaj chaw ntawm ib lub hauv paus, nws nkag mus rau hauv neutralization cov tshuaj tiv thaiv uas txawv acids. Nyob rau hauv kev, sulfuric acid, ferric hydroxide 3 thaum lub sij hawm tshua ua rau tus zus tau tej cov hlau sulfate (III). Vim qhov no cov tshuaj tiv thaiv yuav tshwm sim los ntawm cov pa calcination nyob rau hauv qhib saum huab cua, xws li ib pheej yig txoj kev uas ua sulphate yog siv ob qho tib si nyob rau hauv laboratory thiab nyob rau hauv tej kev kawm muaj.

Thaum lub sij hawm cov tshuaj tiv thaiv nrog hydrochloric acid, nws tshwm sim yog tus tsim ntawm hlau chloride (II).

Nyob rau hauv tej rooj plaub, hlau hydroxide thiab 3 tej zaum yuav muaj acid zog. Yog li, piv txwv li, los ntawm reacting nrog ib tug heev concentrated (concentration yuav tsum tau muaj yam tsawg 50%) sodium hydroxide tshuaj yog tau tetragidroksoferrat (II) sodium rau precipitate raws li ib tug. Txawm li cas los, rau cov ndlwg ntawm xws li ib tug tshuaj tiv thaiv yog tsim nyog los muab ib tug ncaj yooj yim tej yam kev mob: qhov tshuaj tiv thaiv yuav tsum tshwm sim nyob rau hauv cov tshuaj boiling nyob rau hauv ib tug nitrogen atmospheric ib puag ncig.

Raws li twb tau hais, los ntawm cua sov rau cov tshuaj yeeb dej caw decomposes. Cov tshwm sim ntawm no expansion ua raws li hlau oxide (II), thiab, nyob rau hauv tas li ntawd, raws li impurities nws yog xim hlau hlau tau thiab nws cov derivatives dizheleza oxide (III), tshuaj mis yog Fe3O4.

Yuav ua li cas rau tsim hlau hydroxide 3, qhov kev npaj ntawm uas muaj feem xyuam rau nws muaj peev xwm yuav hnov mob nrog acids? Ua ntej mus nrog cov xyaum ua tej yam, nco ntsoov hais kom cov kev ruaj ntseg cov kev cai thaum muaj kev xws thwmsim. Siv cov cai no rau txhua tus neeg mob, cov kev kho mob ntawm acid-alkaline daws teeb meem. Tseem ceeb no - muab txhim khu kev qha kev tiv thaiv thiab kom tsis txhob muaj ingress tshuaj mob ntawm daim tawv nqaij thiab qog ua kua week.

Yog li, ib tug yuav tau hydroxide thaum lub sij hawm cov tshuaj tiv thaiv nyob rau hauv uas lub sib tham hlau chloride (III) thiab Koh - poov tshuaj hydroxide. Qhov no txoj kev - lub feem ntau yog vim li cas rau cov tsim ntawm insoluble. Nyob rau hauv cov tshuaj tiv thaiv ntawm cov tshuaj hais pa pauv cov tshuaj tiv thaiv, uas ua nyob rau hauv precipitate puv xim av. Qhov no precipitate yog cov yam tshuaj yeeb dej caw.

Kev siv cov hlau hydroxide nyob rau hauv lub muaj ntau lawm es lug. Feem ntau yog nws siv raws li active tshuaj nyob rau hauv ib tug npib tsib xee-hlau roj teeb hom. Ntxiv mus, lub compound siv nyob rau hauv metallurgy yuav tsim ntau yam Ferro alloys, raws li zoo raws li nyob rau hauv lub electroforming prizvodstvo, avomobilestroenii.