Question

FeS2-Fe(OH)2-Fe2(SO4)3-Fe(NO3)3 -Fe2O3

Answer 1

1. 2NaOH + FeS2 → Fe(OH)2 + 2NaS
2. 4 H2SO4 + 2 Fe(OH)2 → 6 H2O + SO2 + Fe2(SO4)3
3. Fe2(SO4)3 + 3 Ba(NO3)2 → 2 Fe(NO3)3 + 3 BaSO4
4. 4 Fe(NO3)3 → 3 O2 + 12 NO2 + 2 Fe2O3

Answer 2

The series of compounds you provided is a sequence of chemical reactions involving iron (Fe) and different reactants. Here's a breakdown of each compound:

1. FeS2: Iron disulfide, also known as pyrite or fool's gold, is a compound composed of iron and sulfur.

2. Fe(OH)2: Iron(II) hydroxide is a compound formed when iron reacts with water and oxygen. It consists of iron ions (Fe2+) and hydroxide ions (OH-).

3. Fe2(SO4)3: Iron(III) sulfate is a compound composed of iron ions (Fe3+) and sulfate ions (SO4^2-). The subscript "2" indicates there are two iron ions in the formula.

4. Fe(NO3)3: Iron(III) nitrate is a compound made up of iron ions (Fe3+) and nitrate ions (NO3-). Similar to the previous compound, the subscript "3" indicates three iron ions in the formula.

5. Fe2O3: Iron(III) oxide is a compound consisting of two iron ions (Fe3+) and three oxygen atoms. It is commonly known as rust when it forms on iron in the presence of oxygen and water.

It seems like you've listed these compounds in the order of their formation or reaction. Please note that the reactions involved in the formation of these compounds may vary depending on the specific conditions and reactants involved.