The molar conductance of NaCl, HCI, and CH₃COONa at infinite dilution are 126.45, 426.16, and 91.0 S cm mol^-1 respectively. The molar conductance of CH₃COOH at infinite dilution will be:

1. 698.28 S cm² mol^-1

2. 540.48 S cm² mol^-1

3. 201.28 S cm² mol^-1

4. 390.71 S cm² mol^-1

The molar conductivity of 0.007 M acetic acid is 20 S cm² mol^-1. The dissociation constant of acetic acid is :

(\(\mathrm{\Lambda_{H^{+}}^{o} \ = \ 350 \ S \ cm^{2} \ mol^{-1} }\))
(\(\mathrm{\mathrm{\Lambda_{CH_{3}COO^{-}}^{o} \ = \ 50 \ S \ cm^{2} \ mol^{-1} }}\))

1. $1.75\times {10}^{-5}$ mol L^-1 

2. $2.50\times {10}^{-5}$ mol L^-1 

3. $1.75\times {10}^{-4}$ mol L^-1 

4. $2.50\times {10}^{-4}$ mol L^-1