1.

The conductance of a 0.0015 M aqueous solution of a weak monobasic acid was determined by using a conductivity cell consisting of Pt electrodes. The distance between the electrodes is 120 cm with an area of cross section of 1 cm^(2). The conductance of this solution was found to be 5 xx 10^(-7)S. The pH of the solution is 4. The value of limiting molar conductivity (Lambda^(@)) of this monobasic acid in aqueous solution is Z xx 10^(2)S cm^(-1) mol^(-1). The value of Z is ......... .

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