7.14应用表7.4.1的数据计算25℃时下列电池的电动势。-|||-_(u)/CuS(O)_(4)((b)_(1)=0.01molcdot (kg)^-1) ||CuS(O)_(4)((b)_(2)=0.1molcdot (kg)^-1)|Cu-|||-表7.4.1 25℃时水溶液中电解质的平均离子活度因子y:-|||-/(molcdot (kg)^-1) 0.001 0.005 0.01 0.05 0.10 0.50 1.0 2.0 4.0-|||-HCl 0.965 0.928 0.904 0.830 0.796 0.757 0.809 1.009 1.762-|||-NaCl 0.966 0.929 0.904 0.823 0.778 0.682 0.658 0.671 0.783-|||-KCl 0.965 0.927 0.901 0.815 0.769 0.650 0.605 0.575 0.582-|||-HNO3 0.965 0.927 0.902 0.823 0.785 0.715 0.720 0.783 0.982-|||-NaOH 0.965 0.927 0.899 0.818 0.766 0.693 0.679 0.700 0.890-|||-CaCl2 0.887 0.783 0.724 0.574 0.518 0.448 0.500 0.792 2.934-|||-K2SO4 0.885 0.78 0.71 0.52 0.43 0.251-|||-H2SO4 0.830 0.639 0.544 0.340 0.265 0.154 0.130 0.124 0.171-|||-CdCl2 0.819 0.623 0.524 0.304 0.228 0.100 0.066 0.044-|||-BaCl2 0.88 0.77 0.72 0.56 0.49 0.39 0.393-|||-CuSO4 0.74 0.53 0.41 0.21 0.16 0.068 0.047-|||-ZnSO4 0.734 0.477 0.387 0.202 0.148 0.063 0.043 0.035