Câu 1:
\(PTHH_1:ACO_3+2HCl\rightarrow ACl_2+CO_2+H_2O\)
\(PTHH_2:BCO_3+2HCl\rightarrow BCl_2+CO_2+H_2O\)
\(\Rightarrow n_{HCl}=2n_{CO2}=0,4\left(mol\right)\)
Câu 2:
Ta có:
\(n_{H2}=\frac{2,24}{22,4}=0,1\left(mol\right)\)
Bảo toàn H : \(2HCl\rightarrow H_2\)
\(\Rightarrow n_{HCl}=2n_{H2}=0,2\left(mol\right)\)
BTKL: \(m_{muoi}=5,6+0,2.36,5-0,1.2=12,7\left(g\right)\)