Question

How can EMF of a galvanic cell be calculated if the cell is in standard condition?

Answer 1

Under standard conditions (1 M concentration, 1 atm pressure, and 25°C), the EMF is called the standard EMF or standard cell potential, denoted as \[\ce{E^\circ_{cell}}\]​.

The standard EMF of a galvanic cell is calculated using:

\[\ce{E^{\circ}_{cell} = E^{\circ}_{cathode} - E^{\circ}_{anode}}\]

Where:

\[\ce{E^\circ_{cell}}\]​ = Standard EMF of the cell

\[\ce{E^\circ_{cathode}}\] = Standard reduction potential of the cathode

\[\ce{E^\circ_{anode}}\] = Standard reduction potential of the anode