ACO3 +2HCl--->ACl2 +H2O +CO2
BCO3 +2HCl--->BCl2 +H2O +CO2
Ta có
n\(_{CO2}=\frac{0,672}{22,4}=0,03\left(mol\right)\)=>m\(_{CO2}=0,03.44=1,32\left(g\right)\)
Theo 2 pthh
n\(_{HCl}=2n_{CO2}=0,06\left(mol\right)\)
m\(_{HCl}=0,06.36,5=2,19\left(g\right)\)
Theo 2pthh
n\(_{H2O}=n_{CO2}=0,03\left(mol\right)\)
m\(_{H2O}=0,03.18=0,54\left(g\right)\)
m\(_{ddA}=\)\(m_{ACO3+BCO3}+m_{HCl}-m_{H2O}-m_{CO2}\)
=10+2,19-0,54-1,32=10,33(g)
Chúc bạn hcoj tốt