Zn 0 ---> Zn +2 - oxidare , Zn - ag reducator
Pb +2 ---> Pb 0 - reducere , Pb(NO3)2 - ag oxidant
331 g Pb(NO3)2......207 g Pb
x g Pb(NO3)2.........0.414 g Pb x = 0.662 g Pb(NO3)2
cM=nr moli/volum=masa/masa molara * volum
cM=0,662/(0,004*331)=>cM=0.5 M
Pb - produs de reducere
Zn - reactant de reducere
