What is the molar conductance at infinite dilution for sodium chloride if the molar conductance at infinite dilution……………….

These are the options for the question :What is the molar conductance at infinite dilution for sodium chloride if the molar conductance at infinite dilution of Na+ and Clions are 51.12 × 10-4 Scm2 /mol and 73.54× 10-4 Scm2 /mol respectively?

a. 124.66 Scm2 /mol
b. 22.42 Scm2 /mol
c. 198.20Scm2 /mol
d. 175.78 Scm2 /mol

The correct answer is -a. 124.66 ×10−4 Sm2mol−1
Molar conductance of NaCl = λ + Na + λ + Cl
= 51.12×10−4 + 73.54×10−4
= 124.66 ×10−4 Sm2mol−1