At 298 K, the standard electrode potentials of Cu 2+ /Cu , Zn 2+ / Zn , Fe 2+ / Fe and Ag + / Ag are 0.34 V, -0.76 V ,-0.44 V and 0.80 V, respectively. On the basis of standard electrode potential, predict which of the following reaction can not occur?

Question

At 298 K, the standard electrode potentials of Cu 2+ /Cu , Zn 2+ / Zn , Fe 2+ / Fe and Ag + / Ag are 0.34 V, -0.76 V ,-0.44 V and 0.80 V, respectively. On the basis of standard electrode potential, predict which of the following reaction can not occur? (A) 2 CuSO 4( aq )+2 Ag ( s ) arrow 2 Cu ( s )+ Ag 2 SO 4( aq ) (B) CuSO 4( aq )+ Zn ( s ) arrow ZnSO 4( aq )+ Cu ( s ) (C) CuSO 4( aq )+ Fe ( s ) arrow FeSO 4( aq )+ Cu ( s ) (D) FeSO 4( aq )+ Zn ( s ) arrow ZnSO 4( aq )+ Fe ( s )

Tardigrade Admin · Accepted Answer

SRP: E Zn 2+ / Zn °< E Fe 2+ / Fe °< E Cu 2+ / Cu °< E Ag + / Ag ° Reactivity order: Zn > Fe > Cu > Ag In case of displacement reaction, more reactive metals (lower SRP) can displace less reactive metals (higher SRP) from their salt solution. CuSO 4( text aq. )+2 Ag ( s ) arrow Cu ( s )+ Ag 2 SO 4( text aq. ) Option (3) Reaction is not possible as Ag is less reactive metal compare to Cu.

Q. At $298 K$ , the standard electrode potentials of $C u^{2 +} / C u, Z n^{2 +} / Z n, F e^{2 +} / F e$ and $A g^{+} / A g$ are $0.34 V$ , $- 0.76 V, - 0.44 V$ and $0.80 V$ , respectively.
On the basis of standard electrode potential, predict which of the following reaction can not occur?

$2 C u S O_{4} (a q) + 2 A g (s) \to 2 C u (s) + A g_{2} S O_{4} (a q)$

$C u S O_{4} (a q) + Z n (s) \to Z n S O_{4} (a q) + C u (s)$

$C u S O_{4} (a q) + F e (s) \to F e S O_{4} (a q) + C u (s)$

$F e S O_{4} (a q) + Z n (s) \to Z n S O_{4} (a q) + F e (s)$

Q. At 298K, the standard electrode potentials of Cu2+/Cu,Zn2+/Zn,Fe2+/Fe and Ag+/Ag are 0.34V, −0.76V,−0.44V and 0.80V, respectively. On the basis of standard electrode potential, predict which of the following reaction can not occur?

2CuSO4​(aq)+2Ag(s)→2Cu(s)+Ag2​SO4​(aq)

CuSO4​(aq)+Zn(s)→ZnSO4​(aq)+Cu(s)

CuSO4​(aq)+Fe(s)→FeSO4​(aq)+Cu(s)

FeSO4​(aq)+Zn(s)→ZnSO4​(aq)+Fe(s)

Q. At $298 K$ , the standard electrode potentials of $C u^{2 +} / C u, Z n^{2 +} / Z n, F e^{2 +} / F e$ and $A g^{+} / A g$ are $0.34 V$ , $- 0.76 V, - 0.44 V$ and $0.80 V$ , respectively.
On the basis of standard electrode potential, predict which of the following reaction can not occur?

$2 C u S O_{4} (a q) + 2 A g (s) \to 2 C u (s) + A g_{2} S O_{4} (a q)$

$C u S O_{4} (a q) + Z n (s) \to Z n S O_{4} (a q) + C u (s)$

$C u S O_{4} (a q) + F e (s) \to F e S O_{4} (a q) + C u (s)$

$F e S O_{4} (a q) + Z n (s) \to Z n S O_{4} (a q) + F e (s)$