31. Solving a chemistry problem

2.25 The electrical conductivity of water is 6.33 * 10-8 Ohm-1cm-1, the equivalent electrical conductivity of H and OH ions at infinite dilution at a temperature of 298 K is 394.8 * 10 -4 and 198 * 10-4 Ohm-1 mol-1 m2, respectively; the density of water is 0.997 g/cm3. Calculate the degree of dissociation of water.