Question

1. Al +…… → Al2O3 2. Al + ….. → Al(OH)3 + H2 3. Al + ….. → Al2(SO4)3 + ….

Answer 1

Ответ:

Объяснение:

4Al + 3O2 = 2Al2O3

2Al + 6H2O = 2Al(OH)3 + 3H2

2Al + 3H2SO4 = Al2(SO4)3 +3 H2

Answer 2

It seems like you're interested in chemical reactions involving aluminum (Al). I'll provide you with possible reactions for each of the scenarios you've mentioned:

1. Al + O2 → 2 Al2O3 This is a combustion reaction where aluminum (Al) reacts with oxygen (O2) to form aluminum oxide (Al2O3), also known as alumina.

2. Al + 3 H2O → Al(OH)3 + 3/2 H2 In this reaction, aluminum reacts with water (H2O) to form aluminum hydroxide (Al(OH)3) and hydrogen gas (H2) is released as a byproduct.

3. 2 Al + 3 H2SO4 → Al2(SO4)3 + 3 H2 Here, aluminum reacts with sulfuric acid (H2SO4) to produce aluminum sulfate (Al2(SO4)3) and hydrogen gas (H2).

These reactions represent some common chemical reactions involving aluminum, but it's important to note that the specific conditions (e.g., temperature, concentration) may affect the reaction outcomes.