.........................................................................................
M(FeSO3)=56+32+3*16=136
W(Fe)=56/136=0.41=41%
W(S)=32/136=0.24=24%
W(O)=48/136=0.35=35%
2K + Cl2 = 2KCl
K(0) -1e -> K(+) 2 ок-ие
в-ль
Cl2(0) +2e -> 2Cl(-) 1 в-ие
ок-ль