Question

Fe FeCl3 Fe(OH)3 Fe2O3​

Answer 1

2Fe + 3Cl2 = 2FeCl3

FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl

2Fe(OH)3 (t)= Fe2O3 + 3H2O

Answer 2

The symbols "Fe," "FeCl3," "Fe(OH)3," and "Fe2O3" represent different chemical compounds containing iron (Fe) as the central element. Here's a brief explanation of each compound:

1. Fe: This is the chemical symbol for iron, which is a metallic element with the atomic number 26. Iron is a crucial element in various industrial processes, and it is also an essential nutrient for many living organisms, including humans.

2. FeCl3: This is the chemical formula for iron(III) chloride. It is a compound made up of one iron atom bonded to three chlorine atoms. Iron(III) chloride is a dark brown or yellowish solid and is often used as a catalyst in chemical reactions or for water treatment purposes.

3. Fe(OH)3: This is the chemical formula for iron(III) hydroxide. It is a compound formed when iron reacts with hydroxide ions (OH-) in a basic solution. Iron(III) hydroxide is a reddish-brown precipitate that can form when iron-containing materials come into contact with water or moist air.

4. Fe2O3: This is the chemical formula for iron(III) oxide, also known as ferric oxide or rust. It is a common iron oxide compound characterized by its reddish-brown color. Rust is formed when iron reacts with oxygen and moisture in the presence of air, leading to the oxidation of the iron surface.

These compounds have various applications and play essential roles in different fields, including industrial processes, chemical reactions, and biological functions.