What is the standard cell EMF? — Electrochemistry Chemistry Question

💡 Solution & Explanation

The standard cell potential is calculated by subtracting the standard reduction potential of the anode from the standard reduction potential of the cathode: $E^\circ_{cell} = E^\circ_{cathode} - E^\circ_{anode} = 0.40 \text{ V} - (-0.87 \text{ V}) = 1.27$ V.