The conductance of a 0.0015 M aqueous solution of a weak monobasic acid was determined by using conductivity cell consisting of platinized $\text{'pt'}$ electrodes. The distance between the electrodes is 120 cm with an area of cross section of ${\text{1\hspace{0.17em}cm}}^{\text{2}}\text{.}$The conductance of this solution was found to be ${\text{5\hspace{0.17em}×\hspace{0.17em}10}}^{\text{-7}}\text{S.}$ The ${\text{p}}^{\text{H}}$of the solution is 4.  The value of limiting molar conductivity $\left({\wedge }^{\text{o}}\text{m}\right)$of this weak monobasic acid in aqueous solution is ${\text{z\hspace{0.17em}×\hspace{0.17em}10}}^{\text{2}}{\text{\hspace{0.17em}S\hspace{0.17em}cm}}^{\text{-1}}{\text{\hspace{0.17em}mol}}^{\text{-1}}\text{.}$The value of $\text{z}$is ……