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Molar conductivities \( \left(\Lambda_{\mathrm{m}}^{\circ}\right) \) at infinite dilution of \( \mathrm{NaCl} \),
\( \mathrm{P} \) \( \mathrm{HCl} \) and \( \mathrm{CH}_{3} \) COONa are \( 126.4,425.9 \) and

W.
91.0 \( \mathrm{S} \mathrm{cm}^{2} \mathrm{~mol}^{-1} \) respectively. \( \Lambda_{\mathrm{m}}^{\circ} \) for \( \mathrm{CH}_{3} \mathrm{COOH} \) will be :-
(1) \( 290.8 \mathrm{~S} \mathrm{~cm}^{2} \mathrm{~mol}^{-1} \)
(2) \( 390.5 \mathrm{~S} \mathrm{~cm}^{2} \mathrm{~mol}^{-1} \)
(3) \( 425.5 \mathrm{~S} \mathrm{~cm}^{2} \mathrm{~mol}^{-1} \)
(4) \( 180.5 \mathrm{~S} \mathrm{~cm}^{2} \mathrm{~mol}^{-1} \)
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