The resistances of CH3COOCI3 solutions of various concentrations measured at 25 C using a conductivity cell with a cell constant of 0.2063 cm-1 are given as follows. C/ mol.L 0,0005 0,001 0,005 0,010 0,020 0,050 R/ohm 3314 1669 342,1 174,1 89,08 37,14 a) limit molar conductivity=? b) dissociation constant=?