Qhov txawv ntawm bismuth nitrate thiab bismuth subnitrate yog bismuth nitrate compound muaj Bi3+ cation thiab nitrate anions, whereas bismuth subnitrate muaj Bi3+ cations, nitrate anions, thiab oxide anions.
Bismuth nitrate thiab bismuth subnitrate yog ob yam sib txuas vim bismuth subnitrate yog npaj los ntawm bismuth nitrate compound.
Bismuth Nitrate yog dab tsi?
Bismuth nitrate yog cov ntsev ntsev uas muaj bismuth hauv +3 oxidation xeev thiab nitrate anions. Yog li, nws yog hu ua bismuth (III) nitrate. Nws muaj cov khoom siv pentahydrate ntau tshaj plaws uas muaj txiaj ntsig zoo hauv kev tsim cov bismuth-muaj cov sib txuas. Bismuth nitrate feem ntau muaj nyob rau hauv kev lag luam, thiab nws tsuas yog nitrate ntsev uas tsim los ntawm ib pab pawg 15, uas qhia txog cov xim hlau ntawm bismuth.
Peb tuaj yeem npaj bismuth nitrate los ntawm cov tshuaj tiv thaiv ntawm bismuth hlau thiab concentrated nitric acid. Cov tshuaj tiv thaiv yog raws li nram no:
Bi + 4HNO3 → Bi(NO3)3 + 2H 2O + NO
Cov molar loj ntawm bismuth nitrate yog 485 g / mol. Nws cov qauv tshuaj muaj peev xwm muab tau raws li Bi(NO3)35H2O. Nws zoo li cov khoom dawb, tsis muaj xim tsis muaj xim nrog qhov ntom ntawm 2.90 g / cm3. Thaum dissolving cov compound no nyob rau hauv dej, nws decomposes tsim bismuth oxynitrate. Ntxiv mus, nws yog me ntsis soluble hauv acid.
Feem ntau, bismuth nitrate dissolves nyob rau hauv nitric acid, tab sis nws yog yooj yim hydrolyzed los ua ib tug ntau ntawm oxynitrates thaum pH mus rau saum toj 0. Ntxiv mus, cov khoom no yog soluble nyob rau hauv acetone, acetic acid, thiab glycerol; Txawm li cas los xij, xyaum, nws yog insoluble hauv ethanol thiab ethyl acetate. Tsis tas li ntawd, bismuth nitrate tuaj yeem tsim cov complexes insoluble nrog pyrogallol thiab cupferron. Cov tebchaw no yog lub hauv paus ntawm txoj kev gravimetric rau kev txiav txim siab ntawm cov ntsiab lus bismuth.
Bismuth Subnitrate yog dab tsi?
Bismuth subnitrate tseem hu ua bismuth oxynitrate. Nws yog ib lub npe siv rau ntau lub tebchaw uas muaj Bi3+, nitrate ions, thiab oxide ions. Peb tuaj yeem xav txog cov ntsiab lus no vim lawv tsim los ntawm Bi2O3, N2O5, thiab H2O. Bismuth subnitrate tseem hu ua bismuthyl nitrate.
Thaum ntxov, cov tshuaj no tau siv los ua cov xim dawb hauv kev saib xyuas kev zoo nkauj thiab ua cov tshuaj tua kab mob rau sab hauv thiab sab nraud. Ntxiv mus, qhov sib xyaw no tau siv los ua Dragondorff reagent uas yog siv hauv TLC stain. Cov tshuaj formula ntawm bismuth subnitrate yog BiH2NO5, thiab molar mass yog 305 g / mol. Txawm li cas los xij, daim ntawv muaj nyob rau hauv kev lag luam yog muab raws li Bi 5O(OH)9(NO3) 4
Qee lub tebchaw ntawm bismuth subnitrate yog tag nrho cov yam ntxwv ntawm ib leeg-crystal kev tshawb fawb, thiab raws li cov kev tshawb fawb no, cov tebchaw muaj ib tug octahedral cation qauv. Indirect pov thawj hais tias ob tog octahedral cation Bi6O4(OH)4 6+ or the octahedral cation Bi6(OH)126+ tshwm sim hauv cov tshuaj aqueous.
Peb tuaj yeem npaj bismuth subnitrate los ntawm bismuth (III) nitrate. Hydrolysis ntawm kev daws ntawm bismuth nitrate los ntawm kev sib ntxiv ntawm alkali los yog cov tshuaj tiv thaiv ntawm daim ntawv pentahydrate nrog KOH los yog tswj thermal decomposition ntawm pentahydrate muab bismuth subnitrate.
Qhov txawv ntawm Bismuth Nitrate thiab Bismuth Subnitrate yog dab tsi?
Bismuth nitrate thiab bismuth subnitrate yog inorganic ntsev compounds ntawm bismuth. Qhov sib txawv tseem ceeb ntawm bismuth nitrate thiab bismuth subnitrate yog bismuth nitrate compound muaj Bi3+ cation thiab nitrate anions, whereas bismuth subnitrate muaj Bi3+ cations, nitrate anions, thiab oxide anions.
Summary – Bismuth Nitrate vs Bismuth Subnitrate
Ob leeg bismuth nitrate thiab bismuth subnitrate muaj bismuth atoms hauv lawv lub xeev +3 oxidation thiab nitrate anions. Qhov sib txawv tseem ceeb ntawm bismuth nitrate thiab bismuth subnitrate yog bismuth nitrate compound muaj Bi3+ cation thiab nitrate anions, whereas bismuth subnitrate muaj Bi3+ cations, nitrate anions, thiab oxide anions.
