解析:n(Na) =n/M=4.6/23=0.2mol
2Na + 2H2O = 2NaOH + H2(^)
2 2 22.4
0.2 n(NaOH) V(H2) n(NaOH)=0.2mol V(H2) = 1.12L
c(NaOH)=n/V=0.2/0.2= 1.0mol/L 答:略
解析:n(Na) =n/M=4.6/23=0.2mol
2Na + 2H2O = 2NaOH + H2(^)
2 2 22.4
0.2 n(NaOH) V(H2) n(NaOH)=0.2mol V(H2) = 1.12L
c(NaOH)=n/V=0.2/0.2= 1.0mol/L 答:略