The standard reduction potential for Mg2+/Mg is - 2.37 V and for Cu2+/Cu is 0.337 . The E° textcell for the following reaction is Mg +Cu2+ → Mg2+ +Cu

Question

The standard reduction potential for Mg2+/Mg is - 2.37 V and for Cu2+/Cu is 0.337 . The E° textcell for the following reaction is Mg +Cu2+ → Mg2+ +Cu  (A)  + 2.03 V  (B)  - 2.03 V  (C)  - 2.7 V  (D)  + 2.7 V

Tardigrade Admin · Accepted Answer

E text cell °=E text cathode °-E text anode ° =E( Cu 2+ / Cu )°-E( Mg 2+ / Mg )°=0.337-(-2.37) V =2.7 V

Q. The standard reduction potential for $M g^{2 +} / M g$ is $- 2.37 V$ and for $C u^{2 +} / C u$ is $0.337$ . The $E_{cell}^{\circ}$ for the following reaction is
$M g + C u^{2 +} \to M g^{2 +} + C u$

$+ 2.03 V$

$- 2.03 V$

$- 2.7 V$

$+ 2.7 V$

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

$= E_{(C u^{2 +} / C u)}^{\circ} - E_{(M g^{2 +} / M g)}^{\circ} = 0.337 - (- 2.37) V$

$= 2.7 V$

Q. The standard reduction potential for Mg2+/Mg is −2.37V and for Cu2+/Cu is 0.337 . The Ecell∘​ for the following reaction is Mg+Cu2+→Mg2++Cu

+2.03V

−2.03V

−2.7V

+2.7V