Electrochemistry

At \(25^{\circ} \mathrm{C}\), the molar conductance at infinite dilution for the strong electrolytes \(\mathrm{NaOH}, \mathrm{NaCl}\) and \(\mathrm{BaCl}_2\) are \(248 \times 10^{-4}, 126 \times 10^{-4}\) and \(280 \times 10^{-4} \mathrm{~Sm}^2 \mathrm{~mol}^{-1}\) respectively. \(\lambda_{\mathrm{m}}^{\circ} \mathrm{Ba}(\mathrm{OH})_2\) in \(\mathrm{Sm}^2 \mathrm{~mol}^{-1}\) is