\(\text{Mg+2HCl->MgCl2+H2}\)
\(\text{Ba+2HCl->BaCl2+H2}\)
\(\text{MgO+HCl->MgCl2+H2O}\)
\(\text{BaO+HCl->BaCl2+H2O}\)
Ta có : \(n_{H2}=\frac{3,36}{22,4}=0,15\left(mol\right)\)
\(n_{BaCl2}=0,15\left(mol\right)\)
Quy đổi thành Ba(0,15) Mg(x) O(y)
Giải Hệ PT:
\(\left\{{}\begin{matrix}\text{0,15x137+24x+16y=32,55}\\\text{0,15x2+2x=0,15x2+2y}\end{matrix}\right.\Rightarrow\text{x=y=0,3(mol)}\)
\(\Rightarrow\text{mMgCl2=0,3x95=28,5(g)}\)