25.0*(106/286)=9.27g
9.27/106=0.087mol
C(Na2CO3)=0.087/0.25=0.348mol/L
C(Na+)=2*0.348mol/L=0.696mol/L
C(CO32-)=0.348mol/L 不考虑水解
25.0*(106/286)=9.27g
9.27/106=0.087mol
C(Na2CO3)=0.087/0.25=0.348mol/L
C(Na+)=2*0.348mol/L=0.696mol/L
C(CO32-)=0.348mol/L 不考虑水解