Calculate the Limiting Molar Conductivity of Sodium Chloride, NaCl, from the Following

question 8

Multiple Choice

Calculate the limiting molar conductivity of sodium chloride, NaCl, from the following measurements of molar conductivity at various concentrations. The data refer to a temperature of 298 K.
$\begin{array}{lcccc}c / \mathrm{mol} \mathrm{dm}^{-3} & 0.010 & 0.020 & 0.050 & 0.100 \\\Lambda_{\mathrm{m}} / \mathrm{S} \mathrm{m}{ }^{-1}\left(\mathrm{~mol} \mathrm{dm}^{-3}\right) ^{-1} & 117.45 & 115.70 & 111.01 & 106.69\end{array}$

• A) 122.6 S m^-1 (mol dm^-3)^-1
• B) 106.9 S m^-1 (mol dm^-3)
• C) 119.3 S m^-1 (mol dm^-3)^-1
• D) 96.3 S m^-1 (mol dm^-3)^-1

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