Odpowiedzi

2010-02-21T20:45:19+01:00
2PbO +C------->2Pb+CO₂
Pb +II +2e-> pb o /*2
Co -> C+IV + 4e

2K+2 H₂O-------->2KOH+H₂

ko -> k+I +1e /*2
h2 +i +2e-> h2

Mg+4HNO₃------>Mg(NO₃)₂+2NO₂+2H₂O

mg o -> mg 2+ + 2e
N V + 1 e -> nIV