Standard electrode potential for Sn 4+ / Sn 2+ couple is +0.15 V and that for the Cr 3+ / Cr couple is -0.74. These two couples in their standard state are connected to make a cell. The cell potential will be

Question

Standard electrode potential for Sn 4+ / Sn 2+ couple is +0.15 V and that for the Cr 3+ / Cr couple is -0.74. These two couples in their standard state are connected to make a cell. The cell potential will be (A) +1.83 V (B) +1.19 V (C) + 0.89 V (D) + 0.18 V

Tardigrade Admin · Accepted Answer

E Sn 4+ / Sn 2+0=+0.15 V E Cr 3+ / Cr 0=-0.74 V Now, E textcell 0= E C 0- E A 0 =0.15-(-0.74) E text cell 0=+0.89 V

Q. Standard electrode potential for $S n^{4 +} / S n^{2 +}$ couple is $+ 0.15 V$ and that for the $C r^{3 +} / C r$ couple is $- 0.74$ . These two couples in their standard state are connected to make a cell. The cell potential will be

+1.83 V

+1.19 V

+ 0.89 V

+ 0.18 V

$E_{S n^{4 +} / S n^{2 +}}^{0} = + 0.15 V$
$E_{C r^{3 +} / C r}^{0} = - 0.74 V$
Now,
$E_{cell}^{0} = E_{C}^{0} - E_{A}^{0}$
$= 0.15 - (- 0.74)$
$E_{cell}^{0} = + 0.89 V$

Q. Standard electrode potential for Sn4+/Sn2+ couple is +0.15V and that for the Cr3+/Cr couple is −0.74. These two couples in their standard state are connected to make a cell. The cell potential will be