các pthh như sau bạn nhé :
Fe2O3+3CO\(\rightarrow\)2Fe+3CO2
2Al(OH)3\(\rightarrow\)Al2O3+3H2O
\(Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)
\(Fe_2O_3+3C\underrightarrow{t^o}3CO+2Fe\)
\(Fe_2O_3+2Al\underrightarrow{t^o}Al_2O_3+2Fe\)
\(Fe_2O_3+3CO\underrightarrow{t^o}2Fe+3CO_2\)
\(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)