Question

In an electrochemical cell, the standard electrode potential of \( \text{Zn}^{2+}/\text{Zn} \) is \( -0.76 \, \text{V} \) and that of \( \text{Cu}^{2+}/\text{Cu} \) is \( +0.34 \, \text{V} \). What is the standard EMF of the cell formed by these electrodes?

• A. \( 0.42 \, \text{V} \)
• B. \( 1.10 \, \text{V} \)
• C. \( -1.10 \, \text{V} \)
• D. \( -0.42 \, \text{V} \)

Hint:

To calculate the EMF of a galvanic cell, subtract the standard reduction potential of the anode from that of the cathode. A positive EMF indicates a spontaneous cell reaction.