la Anod: Pb + HSO4(-) => PbSO4 + H(+) + 2 e(-)
asadar:
1mol Pb cedeaza 2 mol e(-) (pentru a forma ionul Pb(2+) )
a mol Pb cedeaza 0.018 mol e(-)
a= (0.018 x 1)/2 => a=0.009 mol Pb
m Pb= n Pb x M Pb => 0.009 x 207.2 =1.865 g Pb.
M Pb= 207.2 g/mol
n Pb = a= 0.009 mol Pb