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PbO2 + 2CO ---> Pb + 2CO2
Pb(IV) +4e- ---> Pb(0)
C(II) -2e- ---> C(IV) |*2
b)
PbCl4 ___/\T___> Pb^4+ + 4Cl^-
(+) Pb^4+ +4e- ----> Pb
(-) 4Cl^- -4e- ----> 2Cl2
Pb^4+ + 4Cl^- ----> Pb + 2Cl2
Znaczki ^ oznaczaja ladunek jonow.