n(HCl)=CV=200ml x 5mol/L = 1mol
由2HCl + CaCO3 = CaCl2 + CO2 + H2O得,1molHCl消耗0.5molCaCO3,生成0.5molCO2.
则m(CaCO3)= (40+12+16 x 3) g/mol x 0.5mol = 50g
标况下,V(CO2)=0.5mol x 22.4L/mol = 11.2L
故能溶解CaCO3的质量为50g及产生CO2气体在标况下的体积11.2L.
求最佳
n(HCl)=CV=200ml x 5mol/L = 1mol
由2HCl + CaCO3 = CaCl2 + CO2 + H2O得,1molHCl消耗0.5molCaCO3,生成0.5molCO2.
则m(CaCO3)= (40+12+16 x 3) g/mol x 0.5mol = 50g
标况下,V(CO2)=0.5mol x 22.4L/mol = 11.2L
故能溶解CaCO3的质量为50g及产生CO2气体在标况下的体积11.2L.
求最佳