Question

Fe fe2o3 fe(oh) fe3(so4)

Answer 1

4Fe + 3O2 = 2Fe2O3

Fe2O3 + 6HCl = 2FeCl3 + 3H2O

FeCl3 + 3NaOH -> Fe(OH)3 + 3NaCl

2Fe(OH)3 + 3H2SO4 = Fe2(SO4)3 + 6H2O

Answer 2

4 Fe + 3 O2 = 2 Fe2O3

Fe2O3 + 3 H2O = 2 Fe(OH)3 ↓

2 Fe(OH)3 + 3 H2SO4 = Fe2(SO4)3 + 6 H2O

Answer 3

The chemical formulas you provided represent different chemical compounds containing the elements iron (Fe), oxygen (O), and/or sulfur (S) in different oxidation states. Here's a brief explanation of each:

• Fe: This is the symbol for elemental iron in its neutral state (i.e., with no charge).

• Fe2O3: This is the chemical formula for iron(III) oxide, also known as ferric oxide or rust. It is composed of two iron atoms and three oxygen atoms and is commonly found in the form of rust on iron or steel.

• Fe(OH): This is an incomplete chemical formula as it does not specify the oxidation state of iron or the number of hydroxide ions (OH-) present. However, if we assume that the iron is in the +3 oxidation state (which is common for iron hydroxides), then the correct formula would be Fe(OH)3, which is called iron(III) hydroxide. It is a yellow-brown solid that can be formed by reacting an iron salt with a base.

• Fe3(SO4): This is an incomplete chemical formula as it does not specify the oxidation state of iron or the number of sulfate ions (SO4 2-) present. However, if we assume that the iron is in the +3 oxidation state (which is common for iron sulfates), then the correct formula would be Fe2(SO4)3, which is called iron(III) sulfate. It is a white or yellowish solid that can be formed by reacting iron with sulfuric acid.