Video: Dab tsi yog oxidation tooj ntawm chromium hauv chromate ion CrO4 2?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Li no, lub oxidation naj npawb ntawm chromium nyob rau hauv lub muab compound yog +6.
Ib yam li ntawd, tus lej oxidation ntawm chromium hauv chromate ion yog dab tsi?
Feem ntau oxidation xeev ntawm chromium yog +6, +3, +2. Ob peb qhov chaw ruaj khov ntawm +5, +4, thiab +1 xeev Txawm li cas los xij, paub. Hauv +6 oxidation xeev , hom tseem ceeb tshaj plaws tsim los ntawm chromium arethe chromate , CrO42−thiab dichromate, Cr 2O72−, ions.
Ib sab saum toj no, dab tsi yog tus nqi ntawm chromate ion? Raws li koj tuaj yeem pom los ntawm cov tshuaj formula, muaj ob qhov sib txawv ions - potassium (K) thiab chromate (CrO4) - uas ua ke los tsim cov poov tshuaj sib xyaw chromate . Ib ion yog ib qho atom lossis molecule uas nqa ib qho txiaj ntsig zoo ornegative nqi . Cov nqi poov tshuaj yog +1, thaum chromate yog -2.
Ib sab saum toj no, dab tsi yog lub xeev oxidation ntawm chromium hauv CrO42 -?
Nyob rau hauv lub dichromate ion, lub oxidation tooj ntawm chromium yog +6. Qhov sum ntawm oxidation naj npawb inCr2O72-, polyatomic ion, yog -2, tus nqi ntawm theion.
Lub npe systematic rau CrO4 2 - yog dab tsi?
Chromate
| PubChem CID: | 24461 |
|---|---|
| Qauv: | Nrhiav cov qauv zoo sib xws |
| Molecular Formula: | CrO4(2-) lossis CrO4-2 |
| Cov npe tshuaj: | Chromate Chromate (VI) Chromate (CrO42-) Chromate ionsdioxido (dioxo) chromium Ntau |
| Molecular Luj: | 115.99 g / mol |
Pom zoo:
Cov kev cai ntawm oxidation tooj yog dab tsi?
Cov cai rau Assigning Oxidation Numbers Lub convention yog hais tias cov cation yog sau ua ntej nyob rau hauv ib tug formula, ua raws li cov anion. Tus lej oxidation ntawm ib lub caij dawb yog ib txwm 0. Tus lej oxidation ntawm monatomic ion sib npaug ntawm tus nqi ntawm ion. Tus naj npawb oxidation ib txwm ntawm hydrogen yog +1. Tus naj npawb oxidation ntawm oxygen hauv cov tebchaw feem ntau yog -2
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