Conductivity of a saturated solution of a sparingly soluble salt \( \mathrm{AB} \) at \( 298 \ma...

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Conductivity of a saturated solution of a sparingly soluble salt \( \mathrm{AB} \) at \( 298 \mathrm{~K} \) is \( 1.85 \times 10^{-5} \mathrm{Sm}^{-1} \). Solubility product of the salt \( \mathrm{AB} \) at \( 298 \mathrm{~K} \) is:
[Given; \( \Lambda_{\mathrm{m}}^{0}(\mathrm{AB})=140 \times 10^{-4} \mathrm{Sm}^{-2} \mathrm{~mol}^{-1} \) ]
a. \( 5.7 \times 10^{+12} \)
b. \( 1.32 \times 10^{-12} \)
c. \( 7.5 \times 10^{-12} \)
d. \( 1.74 \)
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