a,nhhkhí(H2,CO2)=0,67222,4=0,03(mol)PTHH:Fe+2HCl→FeCl2+H2↑(1)CaCO3+2HCl→CaCl2+CO2↑+H2O(2)b,Theo.pt:nHCl=2nhhkhí=2.0,03=0,06(mol)VddHCl=0,060,5=0,12(l)=120(ml)Gọi{nH2=a(mol)nCO2=b(mol),2a+44ba+b=15.2=30(gmol)⇒{a=0,01(mol)b=0,02(mol)a,nhhkhí(H2,CO2)=0,67222,4=0,03(mol)PTHH:Fe+2HCl→FeCl2+H2↑(1)CaCO3+2HCl→CaCl2+CO2↑+H2O(2)b,Theo.pt:nHCl=2nhhkhí=2.0,03=0,06(mol)VddHCl=0,060,5=0,12(l)=120(ml)Gọi{nH2=a(mol)nCO2=b(mol),2a+44ba+b=15.2=30(gmol)⇒{a=0,01(mol)b=0,02(mol)
Theo.pt(1):nCaCO3=nCaCl2=nCO2=0,02(mol)Theo.pt(2):nFe=nFeCl2=nH2=0,01(mol)m=0,01.56+0,02.100=2,56(g)c,CMCaCl2=0,020,12≈0,167MCMFeCl2=0,10,12≈0,083M