CaCO3 + 2HCl -> CaCl2 + CO2 + H2O (1)
MgCO3 + 2HCl -> MgCl2 + CO2 + H2O (2)
nCO2=0,15(mol)
Đặt nCaCO3=a
nMgCO3=b
Ta có hệ:
\(\left\{{}\begin{matrix}100a+84b=13,4\\a+b=0,15\end{matrix}\right.\)
=>a=0,05;b=0,1
mCaCO3=100.0,05=5(g)
mMgCO3=13,4-5=8,4(g)
b;
nHCl=2nCO2=0,3(mol)
Vdd HCl=\(\dfrac{0,3}{1}=0,3\left(lít\right)\)