Oksido redukcija

DanicaDana's picture

K2Cr2O7+H2S+H2SO---> Cr2(SO4)3+S+KHSO4+H2O

milicaradenkovic's picture

K2Cr2O7+3H2S+5H2SO4---------------------->Cr2(SO4)3+3S+2KHSO4+7H2O

Cr6+(+3e-)----------------------->Cr3+/2

S2-(-2e-)--------------------------->S0/3