08/06/22 19:40:23
>>466
(1)2MnO4^- + 5C2O4^2- + 16H^+ → 10CO2↑ + 2Mn^2+ + 8H2O
(2)5*{5.0*10^(-3)*(10/1000)-x}=2*1.25*10^(-2)*(2.5/1000) → x=3.75*10^(-5)mol
(3)5.0*10^(-3)*(v/1000)=3.75*10^(-5)mol → v=7.5ml
∴COD=7.5*0.20*(1000/50)=30mg/L
08/06/22 19:40:23
>>466
(1)2MnO4^- + 5C2O4^2- + 16H^+ → 10CO2↑ + 2Mn^2+ + 8H2O
(2)5*{5.0*10^(-3)*(10/1000)-x}=2*1.25*10^(-2)*(2.5/1000) → x=3.75*10^(-5)mol
(3)5.0*10^(-3)*(v/1000)=3.75*10^(-5)mol → v=7.5ml
∴COD=7.5*0.20*(1000/50)=30mg/L