Question

Fe=FeCl2=Fe(OH)2=FeO

Answer 1

Fe+2HCl=FeCl2+H2
FeCl2+2NaOH=Fe(OH)2+2NaCl
Fe(OH)2-> FeO + H2O

Answer 2

The chemical formulas you provided represent different compounds involving iron. Here's a breakdown of each compound:

1. Fe: This represents elemental iron, which is the pure form of iron consisting of individual iron atoms.

2. FeCl2: This is the chemical formula for iron(II) chloride. It is a compound formed by the combination of one iron atom (Fe) and two chloride ions (Cl-). Iron(II) chloride is a greenish-white crystalline solid and is commonly used in industrial applications.

3. Fe(OH)2: This formula represents iron(II) hydroxide. It is formed by the combination of one iron(II) ion (Fe2+) and two hydroxide ions (OH-). Iron(II) hydroxide is a greenish solid and can be formed as a precipitate when iron salts react with bases or alkalis.

4. FeO: This represents iron(II) oxide, also known as ferrous oxide. It is a compound formed by the combination of one iron(II) ion (Fe2+) and one oxide ion (O2-). Iron(II) oxide is a black solid and is commonly found as a mineral called wüstite.

Each compound has different properties and uses. It's important to note that these compounds can undergo further reactions and transformations depending on the conditions and the presence of other substances.