The molar conductances of $Ba(OH)_2$, $BaCl_2$ and $NH_4Cl$ at infinite dilution are $523.28$, $280.0$ and $129.8 \ S \ cm^2 \ mol^{-1}$ respectively. The molar conductance of $NH_4OH$ at infinite dilution will be:
- A$125.72 \ S \ cm^2 \ mol^{-1}$
- B$251.44 \ S \ cm^2 \ mol^{-1}$
- C$502.88 \ S \ cm^2 \ mol^{-1}$
- D$754.32 \ S \ cm^2 \ mol^{-1}$
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