Question

1、密度=1.84,98％的浓H2SO4,500ml.求C(H2SO4)取50ml加水稀释到500ml求C（H2SO4)

Answer 1

(1)c=1000ρw/M=1000*1.84*98%/98=18.4mol/L稀释后c(H2SO4)=18.4*50/500=1.84mol/Lm(H2SO4)=1.84*50*98%=90.16g(2)m(Fe(OH)3)=10.8gn(Fe(OH)3)=10.8/107=0.1mol而Fe(OH)3由NaOH反应得到,所以n(Na+)=0.1*3=0.3mol所以...