Question

完成化学方程式并配平Ni(OH)2＋Br2＋OH-＝?/Co2O3＋H+＋Cl-＝?/Cu2O＋H+＝?/Fe3+＋H2

Answer 1

2Ni(OH)2＋Br2＋2OH-＝2Ni(OH)3＋2Br-

Co2O3＋6H+＋2Cl-＝2Co2++Cl2+3H2O 或 Co2O3＋6HCl＝2CoCl2+Cl2+3H2O

Cu2O＋2H+＝Cu+Cu2++H2O

2Fe3+＋H2S＝2Fe2+＋2H++S

(Cr2O7)2-＋8H+＋3H2S＝2Cr3+＋7H2O+3S

2MnO4-＋8H+＋10Cl-＝2Mn2+＋4H2O＋5Cl2

3Mn2+＋2MnO4-＋2H2O＝5MnO2+4H+

2[Cr(OH)6]3-＋3Br2＋4OH-＝2[CrO4]2-＋6Br-＋8H2O