Electrochemistry

For a cell reaction, \(A(s)+B^{2+}(a q) \longrightarrow A^{2+}(a q)+B(s)\); the standard emf of the cell is \(0.295 \mathrm{~V}\) at \(25^{\circ} \mathrm{C}\). The equilibrium constant at \(25^{\circ} \mathrm{C}\) will be