CuO+H2$\xrightarrow{t^o} $Cu↓+H2O

CuO+2HCl→CuCl2+H2O

MgO+2HCl→MgCl2+H2O

Al2O3+6HCl→2AlCl3+3H2O

Fe+CuCl2→FeCl2+Cu↓

Fe+2HCl→FeCl2+H2↑

2NaOH+MgCl2→2NaCl+Mg(OH)2↓

2NaOH+FeCl2→2NaCl+Fe(OH)2↓

4NaOH+AlCl3→3NaCl+NaAlO2+2H2O

....................................chúc bạn học tốt...................................

A: $MgO$, $Al_2O_3$, $CuO$, $Cu$

C: $MgCl_2$, $AlCl_3$, $CuCl_2$, $HCl$

D: $Cu$

E: $MgCl_2$, $AlCl_3$, $FeCl_2$

F: $Fe$, $Cu$

H: $FeCl_2$, $HCl$

I: $H_2$

K: $Mg(OH)_2$, $Fe(OH)_2$

$CuO+H_2\buildrel{{t^o}}\over\to Cu+H_2O$

$CuO+2HCl\to CuCl_2+H_2O$

$MgO+2HCl\to MgCl_2+H_2O$

$Al_2O_3+6HCl\to 2AlCl_3+3H_2O$

$Fe+CuCl_2\to FeCl_2+Cu$

$Fe+2HCl\to FeCl_2+H_2$

$MgCl_2+2NaOH\to Mg(OH)_2+2NaCl$

$FeCl_2+2NaOH\to 2NaCl+Fe(OH)_2$

$AlCl_3+4NaOH\to NaAlO_2+3NaCl+2H_2O$