Given, for Sn4+/Sn2+ , standard reduction potential is 0.15 V and for Au3+/Au , standard reduction potential is 1.5 V . For the reaction, 3Sn2+ + 2Au3+ - 3Sn4+ + 2Au , the value of E°cell is,

Question

Given, for Sn4+/Sn2+ , standard reduction potential is 0.15 V and for Au3+/Au , standard reduction potential is 1.5 V . For the reaction, 3Sn2+ + 2Au3+ -> 3Sn4+ + 2Au , the value of E°cell is, (A)  + 1.35  (B)  + 2.55  (C)  - 1.35  (D)  - 2.55

Tardigrade Admin · Accepted Answer

E text cell ° =E text cathode °-E text anode ° =1.5-0.15=1.35 V

Q. Given, for $S n^{4 +} / S n^{2 +}$ , standard reduction potential is $0.15 V$ and for $A u^{3 +} / A u$ , standard reduction potential is $1.5 V$ .
For the reaction,
$3 Sn X^{2 +} + 2 Au X^{3 +} 3 Sn X^{4 +} + 2 Au$ ,
the value of $E_{ce ll}^{\circ}$ is,

$+ 1.35$

$+ 2.55$

$- 1.35$

$- 2.55$

$E_{cell}^{\circ} = E_{cathode}^{\circ} - E_{anode}^{\circ}$

$= 1.5 - 0.15 = 1.35 V$

Q. Given, for Sn4+/Sn2+ , standard reduction potential is 0.15V and for Au3+/Au , standard reduction potential is 1.5V . For the reaction, 3SnX2++2AuX3+​3SnX4++2Au , the value of Ecell∘​ is,

+1.35

+2.55

−1.35

−2.55