Qhov txawv ntawm Liab thiab Dub Hlau Oxide

2024 Tus sau: Alex Aldridge | [email protected]. Kawg hloov kho: 2023-12-17 13:40

Qhov sib txawv tseem ceeb ntawm liab thiab dub hlau oxide yog cov hlau oxide liab tshwm sim raws li cov xim liab-xim av thaum cov hlau oxide dub tshwm sim ua cov hmoov dub. Tsis tas li ntawd, cov hlau oxide liab yog ferromagnetic thaum cov hlau oxide dub yog ferrimagnetic.

Liab thiab dub hlau oxides yog oxides ntawm cov tshuaj lom neeg hlau uas muaj oxidation tooj sib txawv hauv txhua qhov. Hauv lwm lo lus, liab hlau oxide muaj hlau nrog tus lej oxidation +3 thiab dub hlau oxide muaj ob qho tib si +2 thiab +3 oxidation xeev. Cov no yog cov minerals tshwm sim thiab yog cov khoom tseem ceeb hauv kev lag luam tshuaj.

Red Iron Oxide yog dab tsi?

Cov hlau oxide liab yog ferric oxide uas muaj cov tshuaj Fe₂O_{3 Nws lub npe tshuaj yog hlau (III) oxide. Ntxiv mus, nws yog ib tug loj oxide ntawm hlau, thiab nyob rau hauv mineralogy, peb hu no compound "hematite". Nws yog lub hauv paus ntawm cov hlau rau kev lag luam steel thiab yog ferromagnetic. Cov molar loj yog 159.69 g / mol thaum lub melting point ntawm no compound yog nyob ib ncig ntawm 1,539-1, 565 ° C thiab nyob rau hauv lub kub kub nws yooj yim decomposes. Yog li ntawd, cov compound no yog insoluble nyob rau hauv dej.}

Daim duab 01: Liab Hlau Oxide Hmoov

Tsis tas li ntawd, muaj cov qauv sib txawv ntawm cov khoom sib xyaw no; Peb hu lawv "polymorphs". Piv txwv li: alpha theem, gamma theem, thiab lwm yam. Nyob rau hauv txhua tus qauv, ib tug hlau cation khi nrog rau oxygen ligands (nyob ib ncig ntawm cov hlau cation). Ntxiv mus, muaj ib co hydrated daim ntawv ntawm no compound ib yam nkaus thiab. Qhov tseem ceeb tshaj, liab hlau oxide tshwm sim raws li cov khoom liab-xim av. Li no, nws yog qhov qhia tau zoo rau peb kom paub txog qhov sib xyaw no los ntawm lwm cov hlau oxides.

Dab tsi yog Hlau Oxide?

Dub hlau oxide yog cov tshuaj inorganic uas muaj cov tshuaj Fe₃O₄ Nws lub npe tshuaj yog hlau (II) hlau (III) oxide. Qhov no muaj ob qho tib si ruaj khov oxidation xeev ntawm hlau (+2 thiab +3). Nyob rau hauv mineralogy, peb hu cov compound no "magnetite". Tsis zoo li hematite, nws muaj Fe²⁺ thiab Fe^{3+ ions. Qhov tseem ceeb tshaj, qhov sib xyaw no tshwm sim raws li cov hmoov dub.}

Daim duab 02: Ib txwm tshwm sim Dub Hlau Oxide

Ntxiv mus, nws nthuav tawm ferrimagnetism. Cov molar loj ntawm cov compound yog 231.53 g / mol. Lub melting point yog 1,597 ° C, thiab lub boiling point yog 2,623 ° C. Tsis tas li ntawd, cov qauv tshuaj ntawm cov tshuaj no yog cubic inverse spinel pawg qauv; nws muaj cubic, zoo ntim oxide ions, nrog tag nrho cov Fe²⁺ ions nyob ib nrab ntawm cov chaw octahedral thiab Fe^{3+ raug faib sib npaug. hla qhov seem octahedral thiab tetrahedral qhov chaw.}

Qhov txawv ntawm Liab thiab Dub Hlau Oxide yog dab tsi?

Red hlau oxide yog ferric oxide uas muaj cov tshuaj Fe₂O₃ thaum dub hlau oxide yog cov inorganic compound uas muaj Cov tshuaj formula Fe₃O_{4 Cov tshuaj npe ntawm cov hlau oxide liab yog hlau (III) oxide thaum lub npe tshuaj ntawm cov hlau dub oxide yog hlau (II) hlau (III) oxide. Ntxiv mus, liab hlau oxide yog ferromagnetic whereas dub hlau oxide yog ferrimagnetic. Cov ntaub ntawv hauv qab no muab cov ntsiab lus ntxiv ntawm qhov sib txawv ntawm liab thiab dub hlau oxide.}

Summary – Liab vs Dub Iron Oxide

Qhov sib txawv tseem ceeb ntawm liab thiab dub hlau oxide yog cov hlau oxide liab tshwm sim raws li cov xim liab-xim av thaum cov hlau oxide dub tshwm sim ua cov hmoov dub. Nws yog ib qho tseem ceeb kom paub qhov txawv ntawm ob qho piv txwv ntawm hematite thiab magnetite. Hematite yog hlau oxide liab thaum magnetite yog hlau oxide dub.