A) \[{{\Lambda }^{o}}\] of chloroacetic acid \[(ClC{{H}_{2}}COOH)\]
B) \[{{\Lambda }^{o}}\] of NaCl
C) \[{{\Lambda }^{o}}\] of \[C{{H}_{3}}COOK\]
D) the limiting equivalent conductance of \[{{H}^{+}}({{\lambda }^{o}}_{{{H}^{+}}})\] .
Correct Answer: B
Solution :
[b]: According to Kohlrauschs law, the molar conductivity at infinite dilution \[({{\Lambda }^{o}})\] for a weak electrolyte, \[C{{H}_{3}}COOH\] is, \[{{\Lambda }^{o}}_{C{{H}_{3}}COOH}={{\Lambda }^{o}}_{C{{H}_{3}}COONa}+{{\Lambda }^{o}}_{HCl}-{{\Lambda }^{o}}_{NaCl}\] So, for calculating the value of \[{{\Lambda }^{o}}_{C{{H}_{3}}COOH'}\] value of \[{{\Lambda }^{o}}_{NaCl'}\] should also be known.
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