Gọi \(\left\{{}\begin{matrix}n_{CaCO3}:x\left(mol\right)\\n_{KHCO3}:y\left(mol\right)\end{matrix}\right.\)
\(CaCO_3+2HCl\rightarrow CaCl_2+CO_2+H_2O\)
x_______2x_________x______________
\(KHCO_3+HCl\rightarrow KCl+CO_2+H_2O\)
y_______y_________y___________________
\(\left\{{}\begin{matrix}n_{HCl}=0,4\left(mol\right)\Rightarrow2x+y=0,4\left(1\right)\\n_{CO2}=0,2\left(mol\right)\Rightarrow x+y=0,2\left(2\right)\end{matrix}\right.\)
\(\left(1\right)+\left(2\right)\Rightarrow\left\{{}\begin{matrix}x=0,2\\y=0\end{matrix}\right.\)
Không có KHCO3
\(n_{KCl}=\frac{34,9-100.0,2}{74,5}=0,2\left(mol\right)\)
\(n_{AgCl}=n_{HCl}+n_{KCl}=0,4+0,2=0,6\left(mol\right)\)
\(m_{AgCl}=0,6.143,5=86,1\left(g\right)\)
