Cov txheej txheem:

Dab tsi yog cov lej ntawm oxidation hauv polyatomic ion?
Dab tsi yog cov lej ntawm oxidation hauv polyatomic ion?

Video: Dab tsi yog cov lej ntawm oxidation hauv polyatomic ion?

Video: Dab tsi yog cov lej ntawm oxidation hauv polyatomic ion?
Video: Koj Hais Dab Tsi?/Suabci Kwm & Ab Meej Ham/Official MV 2023 2024, Kaum ib hlis
Anonim

Cov lej ntawm cov lej oxidation hauv polyatomic ion yog sib npaug rau tus nqi ntawm cov ion. Tus lej oxidation ntawm sulfur atom hauv SO42- ion yuav tsum yog +6, rau piv txwv , vim tias cov lej ntawm cov lej oxidation ntawm cov atoms hauv cov ion no yuav tsum sib npaug -2.

Ib yam li ntawd, nws tau nug, koj yuav nrhiav tau tus lej oxidation ntawm polyatomic ions li cas?

Hauv ib polyatomic ion , cov sum oxidation naj npawb ntawm tag nrho cov atoms yog sib npaug rau tag nrho cov nqi ntawm cov ion . Piv txwv li, hauv SO2-4, lub oxidation naj npawb ntawm S thiab O yog +6 thiab −2, raws li. Qhov tag nrho oxidation naj npawb hauv sulfate ion yuav yog 1(+6)+4(−2)=-2, uas yog tus nqi ntawm cov ion.

Kuj Paub, dab tsi yog cov lej ntawm tag nrho cov oxidation tooj nyob rau hauv ib qho compound? Cov sum ntawm oxidation naj npawb ntawm tag nrho atoms (los yog ions) nyob rau hauv nruab nrab compound = 0.

Ntawm no, dab tsi yog cov lej ntawm oxidation nyob rau hauv chlorate ion?

Hauv chlorate ion (ClO3-), cov oxidation naj npawb Cl + 5, thiab oxidation naj npawb O yog -2. Nyob rau hauv ib tug nruab nrab atom los yog molecule, lub cov lej ntawm oxidation yuav tsum yog 0. Nyob rau hauv ib tug polyatomic ion , cov cov lej ntawm oxidation ntawm tag nrho cov atoms nyob rau hauv ion yuav tsum sib npaug ntawm tus nqi ntawm lub ion.

Koj sau cov lej oxidation li cas?

Kev piav qhia:

  1. Tus naj npawb oxidation ntawm cov khoom dawb yog ib txwm 0.
  2. Tus lej oxidation ntawm monatomic ion sib npaug ntawm tus nqi ntawm ion.
  3. Tus naj npawb oxidation ntawm H yog +1, tab sis nws yog -1 nyob rau hauv thaum ua ke nrog tsawg electronegative ntsiab.
  4. Tus lej oxidation ntawm O hauv cov tebchaw feem ntau yog -2, tab sis nws yog -1 hauv peroxides.

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