Question

Fe-FeS-FeO-FeSO4-FeCl2-Fe(OH)2-FeO

Answer 1

Fe + S = FeS

2FeS + 3O2 = 2FeO + 2SO2

FeO + H2SO4 = FeSO4 + H2O

FeSO4 + KOH = Fe(OH)2 + K2SO4

Fe(OH)2 = FeO + H2O

Answer 2

It seems like you've listed a series of chemical compounds involving iron (Fe) in various oxidation states and with different elements or ions. Here's a brief breakdown of each compound:

1. Fe: This is the chemical symbol for iron in its elemental form, also known as iron metal.

2. FeS: Iron(II) sulfide, where iron is in the +2 oxidation state.

3. FeO: Iron(II) oxide or ferrous oxide, with iron in the +2 oxidation state.

4. FeSO4: Iron(II) sulfate, which consists of iron in the +2 oxidation state and sulfate ions (SO4^2-).

5. FeCl2: Iron(II) chloride, with iron in the +2 oxidation state and chloride ions (Cl^-).

6. Fe(OH)2: Iron(II) hydroxide, containing iron in the +2 oxidation state and hydroxide ions (OH^-).

7. FeO: Iron(II) oxide, as mentioned earlier.

Each of these compounds contains iron in its +2 oxidation state, except for elemental iron (Fe) which has an oxidation state of 0. The presence of different elements or ions in these compounds results in various chemical properties and reactivities. If you have specific questions about these compounds or their properties, feel free to ask.