Strontium sulfate yog ntsev uas muaj cov kua qaub seem ntawm sulfuric acid thiab strontium nrog valence ntawm ob. Cov mis ntawm cov tshuaj no yog: SrSO4. Koj tuaj yeem siv lwm lub npe rau cov khoom sib txuas, xws li strontium sulfate.
Nyob hauv ntuj
Strontium sulfate muaj nyob rau hauv cov xwm hauv daim ntawv ntawm cov ntxhia - celestine. Lub npe no txhais tias "sab ntuj ceeb tsheej". Nws tau pom thawj zaug rov qab rau xyoo pua kaum yim hauv Sicily, uas yog vim li cas cov ntxhia dais lub npe no.
Cov pob zeb no yog mined hauv Canada, Austria, thiab cov deposits loj nyob rau hauv lub roob Ural.
Crystals ntawm cov pob zeb no yog cov phaj loj thiab prisms. Lawv kuj tuaj yeem ua nyob rau hauv daim ntawv ntawm ntau kab. Celestine yog cov khoom ntim hauv pob zeb, cov kab nrib pleb loj thiab me me, tab sis, ntxiv rau, nws muaj peev xwm nkag mus rau saum npoo thiab ua rau pob zeb ua pob zeb. Feem ntau, lawv tshawb nrhiav cov ntxhia hauv cov pob zeb sedimentary, uas txhais tau hais tias nws txausFeem ntau nws tuaj yeem pom hauv qab hiav txwv thiab dej hiav txwv.
Feem ntau cov ntxhia no muaj xim xiav, tab sis muaj xim tsis muaj xim thiab greyish, nrog rau cov qauv daj-xim av.
Tau txais
Ib qho ntawm cov yam ntxwv ntawm cov hlau xws li strontium yog tias cov khoom no tsis pom muaj kev cuam tshuam thaum cuam tshuam nrog cov kua qaub. Tab sis nyob rau tib lub sij hawm, nws sai thiab nquag ua ke nrog txaus diluted acids. Nws kuj qhia nws cov haujlwm nrog cov neeg sawv cev tsis muaj zog ntawm cov kua qaub. Yog li ntawd, dilute sulfuric acid yog siv los muab cov compound no.
Nws kuj tseem tuaj yeem tau txais ib qho precipitate ntawm strontium sulfate los ntawm kev sib pauv cov tshuaj tiv thaiv nrog dej-soluble ntsev uas muaj cov kua qaub seem ntawm sulfuric acid. Lub resulting precipitate yog cov hmoov dawb zoo, uas tuaj yeem ntxuav tau yooj yim nrog dej.
Solubility ntawm strontium sulfate
Cov tshuaj no yog soluble me ntsis. Solubility ntawm 18 degrees Celsius yog 11.4 mg hauv 100 grams dej. Nws paub tias solubility ntawm feem ntau cov tebchaw nce nrog nce kub. Rau strontium sulfate, kev sib raug zoo hauv qab no tau pom: nrog kev nce hauv qhov kub ntawm 10 txog 70 degrees Celsius, qhov peev xwm no nce 1.5 npaug.
Solubility tuaj yeem nrawm los ntawm kev ntxiv, piv txwv li, chloride ions. Qhov tshwm sim no hu ua cov nyhuv ntsev. Nws nyob rau hauv qhov tseeb hais tias lub solubility ntawm tsis zoo soluble tshuaj, xws li, nyob rau hauv norooj plaub, strontium sulfate nce yog tias muaj ntsev ntxiv rau nws, uas yuav tsis muaj cov ions uas muaj qhov sib xyaw ua ke.
Txoj kev sib txuas
Strontium sulfate tuaj yeem ua rau lwm cov ntsev xws li poov tshuaj sulfate lossis ammonium sulfate los ua ob lub ntsev.
Cov qauv siv lead ua ntawm qhov sib xyaw no muaj ob qhov kev hloov kho. Ib tug ntawm lawv yog rhombic, uas muaj peev xwm nyob rau hauv ib txwm tej yam kev mob mus txog rau ib tug kub ntawm 1152 degrees Celsius, thiab muaj zog cua sov nws ua monoclinic.
Daim ntawv thov
Strontium sulfate yog ib feem ntawm cov electrolytes siv los tsim cov khoom hnav-resistant. Cov tshuaj no tau noj ntau dhau, txij li hauv kev sib xyaw nrog chromium anhydride thiab potassium fluorosilicone, cov khoom siv hluav taws xob tau txais uas ua tau raws li qhov xav tau uas siv rau cov khoom tsim nyog.
Strontium sulfate kuj tseem siv hauv kev lag luam xim. Nws yog tsim nyog sau cia tias strontium ions, uas muaj nyob rau hauv lub tebchaw, xim cov nplaim liab. Cov cuab yeej no yog siv nyob rau hauv ntau cov khoom ntim rau foob pob hluav taws thiab ua kev zoo siab.
Ntxiv rau, strontium sulfate yog siv los ua tus neeg sawv cev oxidizing uas tuaj yeem siv rau qhov kub thiab txias.
