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The limiting molar conductivities \( \Lambda^{\circ} \) for \( \mathrm{NaCl}, \mathrm{KBr} \) and \( \mathrm{KCl} \) are 126,152 and \( 150 \mathrm{Scm}^{2} \mathrm{~mol}^{-1} \) respectively. The \( \Lambda^{\circ} \) for \( \mathrm{NaBr} \) is
\( P \)
(A) \( 302 \mathrm{~S} \mathrm{~cm}^{2} \mathrm{~mol}^{-1} \)
(B) \( 176 \mathrm{~S} \mathrm{~cm}^{2} \mathrm{~mol}^{-1} \)
(C) \( 278 \mathrm{~S} \mathrm{~cm}^{2} \mathrm{~mol}^{-1} \)
(D) \( 128 \mathrm{~S} \mathrm{~cm}^{2} \mathrm{~mol}^{-1} \)
W.
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