Question

Which of the following reactions is not correct:
(a) Zn+CuSO4-ZnSO4+Cu
(b) 2Ag+Cu(NO3)2-2AgNO3+Cu
(c) Fe+CuSO4-FeSO4+Cu
(d) Mg+2HCl-MgCl2+H2

Answer 1

b) 2Ag+Cu(NO3)2-2AgNO3+Cu

Answer 2

Answer:

(b) 2Ag + Cu(NO3)2-----> 2AgNO3 + Cu

As we know , Silver is least reactive than copper ,so it cannot displace copper .

That's why option b is incorrect