How does aluminum react with alkaline solutions?

Aluminum reacts with alkaline solutions in a process known as an acid-base reaction. When aluminum comes into contact with an alkaline solution, such as sodium hydroxide (NaOH), it forms sodium aluminate (NaAlO2) and hydrogen gas (H2). The reaction can be represented by the following chemical equation: 2Al + 2NaOH + 6H2O 鈫?2NaAl(OH)4 + 3H2. In this reaction, aluminum acts as an acid, donating protons to the hydroxide ions (OH-) from the alkaline solution, resulting in the formation of a salt and hydrogen gas.