Cov txheej txheem:
Video: Cov kev cai ntawm oxidation tooj yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov cai rau muab cov lej Oxidation
- Lub rooj sib tham yog tias cov cation yog sau ua ntej hauv ib qho qauv, ua raws li cov anion.
- Cov oxidation naj npawb ntawm ib lub caij dawb yog ib txwm 0.
- Cov oxidation naj npawb monatomic ion sib npaug ntawm tus nqi ntawm ion.
- Ib txwm oxidation naj npawb hydrogen yog +1.
- Cov oxidation naj npawb cov pa oxygen hauv cov tebchaw feem ntau yog -2.
Hauv qhov no, xya txoj cai rau kev muab oxidation yog dab tsi?
Cov cai rau muab cov lej Oxidation rau cov ntsiab lus
- Txoj Cai 1: Tus lej oxidation ntawm cov khoom hauv nws lub xeev dawb (tsis suav nrog) yog xoom - piv txwv li, Al(s) lossis Zn(s).
- Txoj Cai 2: Tus lej oxidation ntawm monatomic (ib-atom) ion yog tib yam li tus nqi ntawm ion, piv txwv li:
- Txoj Cai 3: Cov lej ntawm tag nrho cov lej oxidation hauv qhov nruab nrab yog xoom.
Ib yam li ntawd, tus lej oxidation ntawm o2 yog dab tsi? Cov oxidation xeev cov pa oxygen hauv nws cov tebchaw yog -2, tshwj tsis yog peroxides zoo li H2O2, thiab Na2O2, hauv cov oxidation xeev rau O yog -1. Cov oxidation xeev ntawm hydrogen yog +1 hauv nws cov tebchaw, tshwj tsis yog cov hlau hydrides, xws li NaH, LiH, thiab lwm yam. oxidation xeev rau H yog -1.
Ua li no, koj puas nco qab cov cai oxidation li cas?
1 Teb. Tsis muaj li ntawd txoj cai . Txoj kev zoo tshaj rau nco tus oxidation tus naj npawb ntawm ib qho ion lossis radical yog kom paub cov ntsiab lus lossis cov khoom sib xyaw uas lawv feem ntau koom nrog. Paub cov neeg koom tes koj yuav paub cov oxidation tus lej.
Tus lej oxidation ntawm co2 yog dab tsi?
Cov oxidation naj npawb ntawm C in carbon dioxide ( CO2 ) yog (cai 1 & 2): 0 + (2 x 2) = +4 [Khoom (txoj cai 3): +4 + 2(-2) = 0] The oxidation naj npawb ntawm C hauv methane (CH4) yog (txoj cai 1 & 2): 0 - (4 x1) = -4 [Khoom (txoj cai 3): -4 + 4 (-1) = 0].
Pom zoo:
Dab tsi yog oxidation tooj ntawm chromium hauv chromate ion CrO4 2?
Yog li, tus naj npawb oxidation ntawm chromium nyob rau hauv cov khoom xyaw yog +6
Dab tsi cuam tshuam rau kev tshem cov choj ntsev muaj rau kev ua haujlwm ntawm txhua lub xov tooj ntawm tes electrochemical?
Yog tsis muaj ntsev choj, cov tshuaj nyob rau hauv lub anode compartment yuav ua tau zoo them thiab cov tshuaj nyob rau hauv lub cathode compartment yuav ua tsis zoo nqi, vim hais tias ntawm tus nqi imbalance, lub electrode cov tshuaj tiv thaiv yuav sai sai los mus rau ib tug nres, yog li ntawd nws yuav pab kom tswj tau qhov khiav. los ntawm electrons
Lub luag hauj lwm ntawm cov nroj tsuag kev loj hlob regulators nyob rau hauv cov nroj tsuag kab lis kev cai yog dab tsi?
Hauv cov nroj tsuag kab lis kev cai, kev loj hlob regulator muaj lub luag haujlwm tseem ceeb xws li tswj cov hauv paus thiab tua kev loj hlob hauv cov nroj tsuag tsim thiab callus induction. Cytokinin thiab auxin yog ob txoj kev loj hlob zoo
Dab tsi yog qhov txawv ntawm Biot tooj thiab Nusselt tooj?
Cov lus teb tsis ntev los no. Biot tooj siv thermal conductivity ntawm lub cev (tsis yog kua), whereas Nusselt tooj siv thermal conductivity ntawm cov kua. Qhov sib txawv ntawm Biot thiab Nusselt tus naj npawb yog nyob rau hauv lub ntsiab lus ntawm tshav kub hloov coefficient, uas yog txhais raws li: h = -k (dT / dn) w / (Tw-T0)
Yuav ua li cas cov khoom siv caj ces hauv txhua lub xov tooj tshiab tsim los ntawm kev faib tawm ntawm tes sib piv nrog cov khoom siv caj ces hauv lub xov tooj qub?
Mitosis tshwm sim nyob rau hauv ob lub nuclei uas zoo tib yam rau thawj nucleus. Yog li, ob lub hlwb tshiab tsim tom qab kev faib tawm ntawm tes muaj tib yam khoom siv caj ces. Thaum lub sij hawm mitosis, chromosomes condense los ntawm chromatin. Thaum saib nrog lub microscope, chromosomes pom nyob rau hauv lub nucleus