Question

Al+кислота Al+ щелочь Al+ металл

Answer 1

алюминий+кислота: 2Al + 6HCl = 2AlCl3 + 3H2­

алюминий+щелочь: 2Al + 2NaOH + 6H2O = 2Na[Al(OH)4] + 3H2­

Answer 2

Al +кислота:           2Al + 3H2SO4 ----> Al2(SO4)3 + 3H2­
 

Al +щелочь:            2Al + 2NaOH + 6H2O -----> 2Na[Al(OH)4] + 3H2­

Al + металл             таких нет реакций

 

Answer 3

Chemical Reactions of Aluminum with Acid, Base, and Metal

When aluminum reacts with acid, base, and metal, different chemical reactions occur.

Aluminum with Acid: When aluminum reacts with an acid, such as hydrochloric acid (HCl) or sulfuric acid (H2SO4), it undergoes a single displacement reaction, producing aluminum salt and hydrogen gas. The general chemical equation for this reaction is:

2 Al(s) + 6 HCl(aq) → 2 AlCl3(aq) + 3 H2(g)

This reaction can also be represented with sulfuric acid:

Al(s) + 3 H2SO4(aq) → Al2(SO4)3(aq) + 3 H2(g)

Aluminum with Base: When aluminum reacts with a base, such as sodium hydroxide (NaOH), it forms a salt and releases hydrogen gas. The general chemical equation for this reaction is:

2 Al(s) + 2 NaOH(aq) + 6 H2O(l) → 2 NaAl(OH)4(aq) + 3 H2(g)

This reaction can also be represented as:

2 Al(s) + 2 NaOH(aq) → 2 NaAlO2(aq) + H2(g)

Aluminum with Metal: When aluminum reacts with certain metals, such as zinc (Zn), tin (Sn), lead (Pb), or bismuth (Bi), it forms intermetallic compounds. The specific reactions depend on the metal with which aluminum is reacting.

For example, when aluminum reacts with zinc, the following reaction occurs:

Al(s) + ZnCl2(aq) → AlCl3(aq) + Zn(s)

These reactions demonstrate the chemical properties of aluminum when it comes into contact with acids, bases, and other metals.