Write the reaction equations: Al → AlCl3 → Al (OH) 3 → Al2O3 → Al (NO3) 3 → Al (OH) 3
To carry out the above chain of transformations, it is necessary to carry out the following reactions:
The reaction is the interaction of aluminum and oxygen, as a result of the reaction, aluminum oxide is formed.
4 Al + 3 O2 = 2 Al2O3
The reaction is the interaction of aluminum oxide and hydrochloric acid, as a result of the reaction, aluminum chloride and water are formed.
Al2O3 + 6 HCl = 2 AlCl3 + 3 H2O
The reaction is the interaction of aluminum chloride and sodium hydroxide, as a result of the reaction, sodium chloride and aluminum hydroxide are formed.
AlCl3 + 3 NaOH = Al (OH) 3+ 3 NaCl
The reaction is the interaction of aluminum hydroxide and nitric acid, as a result of the reaction, aluminum nitrate and water are formed.
Al (OH) 3 + 3 HNO3 = Al (NO3) 3 + 3 H2O.