8.24在298 K时,已知 _(m) NaCl =1.2639times (10)^-2 (S)^2cdot (mol)^-1 ,_(m)^infty (NaOH)=2.4808times -|||-.^-2 Scdot (m)^2cdot (mol)^-1 和 _(m)^2 |N{H)_(4)Cl} =1.4981times (10)^-2 Scdot (m)^2cdot (mol)^-1 ;又已知NH3·H 2O在浓度为-|||-..1molcdot (dm)^-3 时的摩尔电导率为 _(m)=3.09times (10)^-4Scdot (m)^2cdot (mol)^-1 ,浓度为 .01molcdot (dm)^-3 时的摩尔-|||-电导率为 _(m)=9.62times (10)^-4Scdot (m)^2cdot (mol)^-1 。试根据上述数据求两种不同浓度的NH3·H 2O溶液的解-|||-离度和解离常数。