Consider the following two half-cell reactions along with the standard reduction potential given :

The fuel cell was set up using the above two reactions such that the cell operates under the standard condition of 1 bar pressure and 298 K temperature. The fuel cell works with efficiency. If the work derived from the cell using 1 mol of is used to compress an ideal gas isothermally against a constant pressure of 1 kPa , then the change in the volume of the gas, . (Nearest integer) Given :