, ,
Pb(NO3)2; ZnSO4; AgNO3; FeSO4; Al2(SO4)3; CuSO4?
.
.
, , .
() , - I -/. , . , ( ). , , . . .
, (E0Ni2+/Ni = 0,23 ) Pb2+(E0Pb2+/Pb = -0,13 ), Cu2+(E0Cu2+/Cu = 0,34 )
Ag+(E0Ag+/Ag = 0,80 ). :
Ni + Pb(NO3)2 = Pb + Ni(NO3)2,
Ni0 2 = Ni2+,
Pb2+ + 2 = Pb;
Ni + CuSO4 = Cu + NiSO4,
Ni0 2 = Ni2+,
Cu2+ + 2 = Cu;
Ni + 2AgNO3 = 2Ag + Ni(NO3)2,
Ni0 2 = Ni2+,
2Ag+ + 2 = 2Ag.
, . (58,7 . . .) (207,2 . . .), (63,5 . . .) (107,8 . . .), .
, , .