Cobalt yog feem ntau pom nyob rau hauv +2} Thiab +3 Valence Mines. Nws tsis hnov mob nrog dej ntawm chav tsev kub thiab yog ruaj khov nyob rau hauv huab cua noo. Thaum rhuab mus rau saum 300 degree hauv huab cua, nws oxidises los ua Cobalt monoxide Coo, thiab thaum rhuab dawb kub, nws hlawv los ua cobalt tetroxide co3o4. Cov xim hlau zoo cobalt hmoov tsim los ntawm hydrogen txo cov txheej txheem tuaj yeem ua rau muaj huab cua los ua cov cobalalt oxide. Cobalt yog cov hlau ua piv txwv, raws li qhia los ntawm nws lub peev xwm electrode. Nws cov tshuaj lom neeg zoo ib yam li cov hlau thiab npib tsib xee. Cobalt oxidises thaum kub. Thaum rhuab, cobalt reacts ua txhaum nrog oxygen, leej faj, chlorine thiab bromine thiab bromine los ua cov ntawv sib raug zoo. Cobalt yog soluble hauv dilute acids, tab sis yog passivated los ntawm kev tsim ntawm ib tug oxide zaj duab xis hauv fuming nitric acid. Cobalt yog maj mam tawm tsam los ntawm hydrofluoric acid, ammonia thiab sodium hydroxide. Cobalt yog tus siv amphoce.
Kev tawm tsam nrog lwm cov ntsiab lus
Cobalt tsis tshua nqus hydrogen, txawm tias thaum muaj kub, thiab nitrogen yog suab insoluble hauv kev cobalt ntawm kev kub siab txog 1200 degree. Zoo, dispersed cobalt hmoov tuaj yeem ua rau muaj cua, tab sis cov hlau loj ntawm cov hlau nyob ruaj khov hauv qab no 300 degree. Thaum cobalt yog rhuab rau 900 degree, ib cov ntaub ntawv oxide rau saum npoo. Thawj txheej yog co3o4 thiab ob txheej thib ob, uas los ze zog rau cov hlau, yog coo. Thaum rhuab saum toj 900 degree, co3o4 decomposes thiab oxide txheej tsuas muaj coo. Cobalt reacts nrog ntau yam tsis muaj hlau thaum ua kom sov, piv txwv nrog Halogens, Boron, Phosphorus, Arsenic thiab Antiation. Cov tshuaj tiv thaiv feem ntau ua lub teeb thiab kub. Cobalt reacts nrog fluorine los ua cov fobalt
Cov tshuaj tiv thaiv nrog cov tebchaw
Cobalt yog oxidised rau coo los ntawm dej vapor thaum rhuab kub, thiab hnov mob nrog ammonia ntawm 4n, tab sis qhov no compound decomposes ntawm 600 degree. Cov pa roj carbon monoxide nrog cov hmoov roj cobalvalt ntawm 200 degree thiab 100 atctionliclotal posthadiclicalalt anticatures saum 225 degree siab, nws tsim lub carbide co2c.
Cobalt yog tiv thaiv ntau dua li hlau acids dua li hlau, raws li tuaj yeem pom los ntawm cov ntaub ntawv muaj peev xwm: co / co} e degree {1}}. 27V; 27V; 27V; 27V; 27V; 27V; 27V; 27V; 27V; 27V; 27V; 27V; 27V; 27V; Fe / fe {2+ e degree =-0. 44v. Cobalt dissolves nyob rau hauv dilute hydrochloric acid thiab dilute sulfuric acid, tso hydrogen. Concentrated nitric acid reacts sai sai nrog cobalt ntawm chav tsev kub, tab sis thaum -10 degree nws passivates lub cobalt nto. Hydrofluoric acid thiab phosphoric acid kuj muaj nrog cobalt, tab sis cobalt tsis hnov mob nrog dilute alkali daws.
Hydrogen chloride reacts nrog cobalt ntawm 450 degree los ua cobalt chloride (II); Hydrogen sulfide kis thoob plaws Cobalt Hmoov ntawm 400 degree cov lej col3s4, tab sis ntawm 700 degree nws daim ntawv cobalal sulfide Cos.
