2 Na + 2 H2O= 2 NaOH + H2(气体)
4.6g/23(g/mol)=0.2mol 0.2mol 0.1mol=0.2g
氢气的体积:0.1*22.4=2.24L
所得溶液的质量是:4.6g+97.6g-0.2g=102g
溶液的体积是:102g/ 1.02g/ml=100ml=0.1L
量浓度c=0.2mol/0.1L=2mol/L
2 Na + 2 H2O= 2 NaOH + H2(气体)
4.6g/23(g/mol)=0.2mol 0.2mol 0.1mol=0.2g
氢气的体积:0.1*22.4=2.24L
所得溶液的质量是:4.6g+97.6g-0.2g=102g
溶液的体积是:102g/ 1.02g/ml=100ml=0.1L
量浓度c=0.2mol/0.1L=2mol/L