Question

小苏打片每片含0点42g炭酸氢钠,片小苏打和胃酸完全中和,被中和的氢离子是?mol

Answer 1

n(NaHCO3)=m(NaHCO3)/M(NaHCO3)=0.42g/(84g/mol)=0.05molNaHCO3+HCl=NaCl+H2O+CO2↑1mol 1mol0.05mol n(HCl)n(HCl)=0.05mol*1mol/1mol=0.05mol∵1mol HCl含1mol H+∴n(H+)=n(HCl)=0.05mol答：被中和的氢离子是0.05mo...