Em tham khảo nhé:

\(\begin{array}{l}
BaC{O_3} \xrightarrow{t^0} BaO + C{O_2}\\
4Fe{(OH)_2} + {O_2} + 2{H_2}O \xrightarrow{t^0} 4Fe{(OH)_3}\\
2Fe{(OH)_3} \xrightarrow{t^0} F{e_2}{O_3} + 3{H_2}O\\
Cu{(OH)_2} \xrightarrow{t^0} CuO+ {H_2}O\\
MgC{O_3} \xrightarrow{t^0} MgO + C{O_2}\\
A:BaO,Al,F{e_2}{O_3},CuO,MgO\\
BaO + {H_2}O \to Ba{(OH)_2}\\
Al + Ba{(OH)_2} + 2{H_2}O \to Ba{(Al{O_2})_2} + 3{H_2}\\
B:Ba{(OH)_2},Ba{(Al{O_2})_2}\\
C:F{e_2}{O_3},CuO,MgO\\
F{e_2}{O_3} + 3CO \xrightarrow{t^0} 2Fe + 3C{O_2}\\
CuO + CO \xrightarrow{t^0} Cu + C{O_2}\\
D:C{O_2}\\
E:Fe,Cu,MgO\\
Fe + 2HCl \to FeC{l_2} + {H_2}\\
MgO + 2HCl \to MgC{l_2} + {H_2}O\\
Y:FeC{l_2},MgC{l_2}\\
F:Cu
\end{array}\)

A: $BaO$, $Fe_2O_3$, $Al_2O_3$, $CuO$, $MgO$

B: $Ba(OH)_2$, $Ba(AlO_2)_2$

C: $Fe_2O_3$, $CuO$, $MgO$

D: $CO$, $CO_2$

E: $Fe$, $Cu$, $MgO$

Y: $FeCl_2$, $MgCl_2$, $HCl$

F: $Cu$

PTHH:

$BaCO_3\buildrel{{t^o}}\over\to BaO+CO_2$

$2Fe(OH)_2+\dfrac{1}{2}O_2\buildrel{{t^o}}\over\to Fe_2O_3+2H_2O$

$4Al+3O_2\buildrel{{t^o}}\over\to 2Al_2O_3$

$Cu(OH)_2\buildrel{{t^o}}\over\to CuO+H_2O$

$MgCO_3\buildrel{{t^o}}\over\to MgO+CO_2$

$BaO+H_2O\to Ba(OH)_2$

$Ba(OH)_2+Al_2O_3\to Ba(AlO_2)_2+2H_2O$

$Fe_2O_3+3CO\buildrel{{t^o}}\over\to 2Fe+3CO_2$

$CuO+CO\buildrel{{t^o}}\over\to Cu+CO_2$

$Fe+2HCl\to FeCl_2+H_2$

$MgO+2HCl\to MgCl_2+H_2O$