1) Sai nhé, từ Al(OH)3 ra Al2O3 được thôi

\(2Al{(OH)_3}\xrightarrow{{}}A{l_2}{O_3} + 3{H_2}O\)

2) \(F{e_2}{O_3} + 3{H_2}\xrightarrow{{}}2Fe + 3{H_2}O\)

\(Fe + 2HCl\xrightarrow{{}}FeC{l_2} + {H_2}\)

\(FeC{l_2} + 2NaOH\xrightarrow{{}}Fe{(OH)_2} + 2NaCl\)

\(Fe{(OH)_2} + {H_2}S{O_4}\xrightarrow{{}}FeS{O_4} + 2{H_2}O\)

3) \(2Fe + 3C{l_2}\xrightarrow{{}}2FeC{l_3}\)

\(FeC{l_3} + 3NaOH\xrightarrow{{}}Fe{(OH)_3} + 3NaCl\)

\(2Fe{(OH)_3}\xrightarrow{{}}F{e_2}{O_3} + 3{H_2}O\)

4) \(2Na + 2{C_2}{H_5}OH\xrightarrow{{}}2{C_2}{H_5}ONa + {H_2}\)

\(2Na + 2{H_2}O\xrightarrow{{}}2NaOH + {H_2}\)

5) \(CaC{O_3} + 2C{H_3}COOH\xrightarrow{{}}{(C{H_3}COO)_2}Ca + C{O_2} + {H_2}O\)

6) \(CuO + 2C{H_3}COOH\xrightarrow{{}}{(C{H_3}COO)_2}Cu + {H_2}O\)

7) \(C{H_3}COO{C_2}{H_5} + {H_2}O\overset {} \leftrightarrows C{H_3}COOH + {C_2}{H_5}OH\)