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Moderate

Electrochemical Cell

APCHEM-408QIS

Consider a spontaneous electrochemical cell containing $Cd, Cd^{2+},Ag^+$, and $Ag$.

The reduction potential of $Cd$ is -0.403 V and $Ag$ is 0.799 V.

What is the balanced equation for the reaction that is occurring, and what is the electrochemical cell voltage?

A

$Ag^++ Cd → Cd^{2+}+ Ag$

1.19 V

B

$2Ag^++ Cd → Cd^{2+}+ 2Ag$

1.20 V

C

$Ag + Cd^{2+}→ Cd + Ag^+$

0.40 V

D

$2Ag^++ Cd → Cd^{2+}+ 2Ag$

2.00 V