Barium hydroxide. Yuav ua li cas peb paub txog nws?

Barium - yog ib tug tshuaj caij nyob rau hauv lub periodic lub rooj uas reacts nrog dej thiab acid daws teeb meem. Nws cov ntaub ntawv barium hydroxide uas nws mis yog kav ywm (OH) 2 (npe Hmoob "caustic barite"). Qhov no yog ib tug complex inorganic substance. Externally nws muaj hauv daim ntawv ntawm ib tug dawb hmoov, muaj raws ntawm pob tshab muaju. Qhov no tshuaj yog heev soluble nyob rau hauv cov dej - thiab qhov kub thiab txias ntawm cov dej yog siab dua, qhov zoo solubility. "Barite dej" (los yog ib tug nyeem barium hydroxide tshuaj) xa mus rau cov dej nyob rau hauv uas yog yaj kav ywm (OH) 2. Barium hydroxide dawb do reacts nrog cov pa roj carbon dioxide, thiab yog li ntawd nws aqueous tov (los yog "barite dej") yog siv nyob rau hauv analytical Science News for KIDS raws li ib tug reagent rau CO2.

Tsis tas li ntawd, barite dej yuav pab raws li ib tug reagent rau sulfate thiab carbonate ions. Nrog zoo dej solubility ntawm barium hydroxide yog kiag li insoluble nyob rau hauv dej cawv. Qhov no feature yog dav siv nyob rau hauv ntau yam sectors ntawm kev khwv nyiaj txiag. Tab sis ua ntej yuav siv lub hydroxide, koj yuav tsum paub txog yuav ua li cas nws yog ua los ntawm muaj reagents. Yog li, lub barium hydroxide yog tau los ntawm dissolving nyob rau hauv dej kub los yog los ntawm cua sov oxide ntawm barium sulfide nyob rau hauv ib tug kwj ntawm cov superheated chav. Qhov no yuav ua tau tiav xwb nyob rau hauv lub laboratory, raws li nyob rau hauv lub neej txhua hnub, tus txheej txheem no tsis yog tsuas yog tsis yooj yim sua, tab sis kuj txaus ntshai rau tib neeg noj qab haus huv.

Barium hydroxide yog siv rau kev tshem tawm ntawm sulfate ions los ntawm cov tsiaj thiab zaub roj, muaj kev daws teeb meem, raws li tau zoo raws li siv los npaj lub cesium thiab rubidium hydroxide raws li ib tug roj nplua nyeem tivthaiv.

Barium hydroxide muaj ntau zog, xws li alkali. Nws yog siv nyob rau hauv cov roj kev lag luam los ntawm kev ua cov roj additives. Ntxiv mus, xws li ib tug hydroxide txig manifests nws tus kheej raws li ib tug additive rau roj, yog li tam sim no nws yog raws li nyob rau hauv cov ib tug xov tooj ntawm cov khoom. Tsis-ferrous metallurgy thiab tshuaj kev lag luam kev siv ntawm barium hydroxide nyob rau hauv lawv cov lag luam. Lug siv raws li tus barium oxide hydrate reagent rau SO42- thiab CO32-, thaum lub sij hawm tu ntawm cov tsiaj nqaijrog thiab zaub roj li lubricant tivthaiv, thaum tshem SO42- los ntawm muaj kev daws teeb meem.

Kev npaj ntawm kav ywm ntsev thiab hydroxides, Cs, Rb ntawm lawv sulfates los yog carbonates tsis yog tsis muaj siv xws reagent raws li barium hydroxide. Qhov no feature kuj ua yuav tsum muaj nyob rau hauv kev txiav txim tej zaum siv cov hydroxide nyob rau hauv lub lag luam. Kuj ceeb tias, barium yog siv los tsim dag comet: ib tug khub ntawm barium, uas yog tso tawm rau lub Rooj Tswjhwm Saib cov spacecraft, yuav nkag ionize lub hnub lub rays thiab tig mus rau hauv ib tug kaj ntshav huab.

Thaum tsib caug-cuaj xyoo ntawm lub xeem xyoo txhiab, thaum lub Soviet interplanetary automatic chaw nres tsheb "nkauj hnub nraug hli-1" ua rau nws lub davhlau, thawj dag comet twb tsim. Physics America thiab lub teb chaws Yelemees nyob rau hauv lub seventies, kawm ua tus electromagnetic teb ntawm lub ntiaj teb, ua qhov kev tso tawm ntawm barium hmoov nyob rau hauv tus nqi ntawm kaum tsib kilograms cia li saum toj no Colombia. Qhov no ua rau ib tug ntshav huab, uas muaj ib tug elongated lub cev, yog nyob raws tus magnetic teb, ua rau nws tau qhia kom meej rau lawv qhov chaw nyob. Nees nkaum xyoo tom qab, tus hais ntawm barium sulfate thiab barium hloov dua siab tshiab rau dav hlau tau siv nyob rau hauv txoj kev tshawb no ntawm lub aurora.

Raws li koj tau pom los ntawm tag nrho cov saum toj no, barium hydroxide yog heev ib qho tseem ceeb tivthaiv nyob rau hauv niaj hnub kev lag luam. Yog tsis muaj nws cov cim zog yuav ua tau heev yooj yim mus nqa tawm tej yam kev ua hauj lwm. Peb kuj yuav tsis txais cov hais tias tsim thaum uas siv cov hydroxide reagents yog lug siv nyob rau hauv yuav luag tag nrho cov sectors ntawm kev khwv nyiaj txiag!