Consider an hypothetical electrochemical cell :
${\mathrm{A}}_{\left(\mathrm{s}\right)}\left|{\mathrm{A}}_{\left(\mathrm{aq}\right)}^{2+}\right|\left|{\mathrm{B}}_{\left(\mathrm{aq}\right)}^{2+}\right|{\mathrm{B}}_{\left(\mathrm{s}\right)}$
The standard emf of the given cell at 25^oC and 20^oC are 0.3525 V and 0.3533 V
respectively. The value of magnitude ΔS^o for the cell in (J/K) is ________.