一.n(CO2)=1.064/22.4=0.0475mol
n(CO2)=n(CaCO3)=0.0475mol
m(CaCO3)=0.0475*100=4.75
CaCO3%=(4.75/5)*100%=95%
二.
∵2n(CaCO3)=n(HCl)=0.095mol
∴n剩余HCl=2*0.05-0.095=0.005mol
∴n(NaOH)=0.005mol
∴v(NaOH)=5ml
一.n(CO2)=1.064/22.4=0.0475mol
n(CO2)=n(CaCO3)=0.0475mol
m(CaCO3)=0.0475*100=4.75
CaCO3%=(4.75/5)*100%=95%
二.
∵2n(CaCO3)=n(HCl)=0.095mol
∴n剩余HCl=2*0.05-0.095=0.005mol
∴n(NaOH)=0.005mol
∴v(NaOH)=5ml