Question

. Which of the following is a valid displacement reaction? (1) Cu(s) + FeSO4(aq)  CuSO4(aq) + Fe(s) (2) Pb(s) + CuCl2(aq)  PbCl2(aq) + Cu(s) (3) Cu(s) + ZnSO4(aq)  CuSO4(aq) + Zn(s) (4) 2Ag(s) + CuSO4(aq)  Ag2SO4(aq) + Cu(s)​

Answer 1

Explanation:

just check the metal reactivity series bro and see that in which of them the metal with higher reactivity is displacing another metal with lower reactivity from its salt solution

Answer 2

Answer:

(2) Pb(s) + CuCl2(aq) → PbCl2(aq) + Cu(s)

Explanation:

Since lead is more reactive than copper, it displaces copper from copper chloride to form lead chloride and copper metal.