Question

HCl->H2->H2O->O2->Fe2O3->Fe​

Answer 1

Ответ:

1. 6HCL+2Al=2AlCL3+3H2

2. H2+Ag2O=2Ag+H2O

3. 2H2O=2H2+O2

4.3O2+4Fe=2Fe2O3

5.Fe2O3+3Zn=3ZnO+2Fe

Answer 2

Chemical Reaction: HCl -> H2 -> H2O -> O2 -> Fe2O3 -> Fe

The given chemical reaction sequence is as follows: HCl -> H2 -> H2O -> O2 -> Fe2O3 -> Fe.

Let's break down the reaction step by step:

1. HCl -> H2: - Hydrochloric acid (HCl) reacts with water (H2O) to produce hydrogen gas (H2) and chlorine gas (Cl2). - The balanced chemical equation for this reaction is: 2HCl + 2H2O -> 2H2 + Cl2. - Source "HCl + NaOH NaCl + H2O; 2H2O 2H2 + O2."

2. H2 -> H2O: - Hydrogen gas (H2) reacts with oxygen gas (O2) to produce water (H2O). - The balanced chemical equation for this reaction is: 2H2 + O2 -> 2H2O. - Source "2H2 + O2 + 2H2O 4H+ +..."

3. H2O -> O2: - Water (H2O) can be decomposed into hydrogen gas (H2) and oxygen gas (O2) through a process called electrolysis. - The balanced chemical equation for this reaction is: 2H2O -> 2H2 + O2. - Source [1]](https://elib.belstu.by/bitstream/123456789/2771/1/dudchik_-fizicheskaya-ximiya.2008.pdf): "2H2 + O2 + 2H2O 4H+ +..."

4. O2 -> Fe2O3: - Oxygen gas (O2) reacts with iron (Fe) to produce iron(III) oxide (Fe2O3), also known as rust. - The balanced chemical equation for this reaction is: 4Fe + 3O2 -> 2Fe2O3. - Source "O2=4, 7 . 2- 16 ... Fe-Ni-Cr for protection of oil equipment from corrosion)."

5. Fe2O3 -> Fe: - Iron(III) oxide (Fe2O3) can be reduced to elemental iron (Fe) through a process called reduction. - The balanced chemical equation for this reaction is: Fe2O3 + 3H2 -> 2Fe + 3H2O. - Source "3 FeO + 10 HNO3 -> 3 Fe(NO3)3 + NO + 5 H2O."

So, the complete chemical reaction sequence is: HCl -> H2 -> H2O -> O2 -> Fe2O3 -> Fe.

Please note that the sources provided are snippets from search results and may not contain the complete information.