Na2CO3+2HCl=>2NaCl+CO2\(\uparrow\)+H2O
x =>x
0,1mol=>0,2mol
NaHCO3+HCl=>NaCl+CO2\(\uparrow\)+H2O
y =>y
0,1mol=>0,1mol
nCO2=0,2mol
\(|^{106x+84y=19}_{x+y=0,2}\)\(\Leftrightarrow\left\{{}\begin{matrix}x=0,1\\y=0,1\end{matrix}\right.\)
mNa2CO3=0,1\(\times\)106=10,6g
%Na2CO3=\(\dfrac{10,6\times100}{19}\)=56%
%NaHCO3=100\(-\)56=44%
nHCL=0,1+0,2=0,3mol