Question

Express your answer as a chemical formula.

What is the formula of the precipitate formed in the following chemical reactions:

1.NaOH(aq) + KNO3(aq) → ???
2.KOH(aq) + NaNO3(aq) → ???
3.NaOH(aq) + Fe(NO3)2(aq) → ???
a) NaNO3
b) KNO3
c) KOH
d) Fe(OH)2

Answer 1

Iron(II) hydroxide is represented by the chemical formula Fe(OH)2, formed through the reaction of iron(II) ions with hydroxide ions.

Step-by-step explanation:

The chemical formula you are asking about is Fe(OH)2, which represents iron(II) hydroxide. This compound is formed when iron(II) ions, Fe2+, react with hydroxide ions, OH−.

The reaction can be shown as Fe2+ (aq) + 2OH− (aq) → Fe(OH)2(s), where (s) denotes that the product is a solid. Iron(II) hydroxide is commonly encountered in chemistry, particularly when discussing reactions involving iron in its +2 oxidation state.