Hauv chemistry, disproportionation, qee zaum hu ua dismutation, yog redox cov tshuaj tiv thaiv uas ib qho kev sib txuas ntawm nruab nrab oxidation xeev hloov mus rau ob lub tebchaw, ib qho siab dua thiab ib qho ntawm qis oxidation xeev.
txhais tau li cas los ntawm cov tshuaj tiv thaiv tsis sib npaug muab piv txwv?
teb. Nyob rau hauv ib tug disproportionation cov tshuaj tiv thaiv, tib yam khoom undergoes oxidation (nce nyob rau hauv oxidation tooj) raws li zoo raws li txo (qis nyob rau hauv oxidation tooj) uas ua rau tsim ntawm ob yam khoom sib txawv. e.g. (i) Mn (VI) ua tsis ruaj tsis khov txheeb ze rau Mn (VII) thiab Mn (IV) hauv cov kua qaub
txhais tau li cas los ntawm cov tshuaj tiv thaiv tsis sib npaug Chav Kawm 11?
Tus cov tshuaj tiv thaiv uas ib qho reactant tau oxidized thiab tib reactant tau txo qisyog lub npe hu ua cov tshuaj tiv thaiv tsis sib xws. Cov tshuaj tiv thaiv tsis sib xws tseem hu ua dismutation reaction. Tib lub ntsiab yog oxidized thiab txo nyob rau hauv cov tshuaj tiv thaiv disproportionation.
Dab tsi yog qhov tsis txaus ntseeg cov tshuaj tiv thaiv nrog Piv txwv Chav 12?
Ib qho tshuaj tiv thaiv uas tib hom yog ib txhij oxidised thiab txo qis yog hu ua cov tshuaj tiv thaiv tsis sib xws. Ntawm no, peb tuaj yeem hais tias Cr hauv + 5 lub xeev oxidation undergo disproportionation rau hauv nws +6 thiab +3 xeev.
Dab tsi yog qhov kev cuam tshuam tsis txaus ntseeg muab piv txwv Chav Kawm 11?
Cov tshuaj tiv thaiv tsis sib xws yog cov tshuaj tiv thaiv uas cov khoom sib xyaw ua ke oxidized thiab txo kom muab ob yam khoom sib txawv. … Cov tshuaj tiv thaiv, 2H2O2→2H2O+O2 yog cov tshuaj tiv thaiv tsis sib xws. Ib molecule ntawm hydrogen peroxide yog oxidized rau oxygen thiab lub thib ob molecule ntawm hydrogen peroxide yog txo mus rau dej.
