Sodium Hydroxide and Iron(III) Chloride (Rust Color)

3NaOH + FeCl3 → Fe(OH)3 + 3NaCl

Visão geral

When sodium hydroxide is added to iron(III) chloride solution, a characteristic rust-brown precipitate of iron(III) hydroxide forms. This gelatinous precipitate is used to identify iron(III) ions in qualitative analysis.

Participantes

Papel Substância Coeficiente Estado
Reagente Iron(III) Chloride FeCl₃ 1 (aq)
Reagente Sodium Hydroxide NaOH 3 (aq)
Produto Sodium Chloride NaCl 3 (aq)

Exemplo do cotidiano

The rust-colored sludge in water treatment plants is often iron(III) hydroxide formed by adding base to iron-containing water.

Importância industrial

O hidróxido de ferro(III) é utilizado como pigmento (óxido de ferro amarelo após calcinação), no tratamento de água como coagulante e na remoção de fosfatos de águas residuais.

Propriedades

Tipo
Double Replacement
Reversível
Não
Energia
Exotérmico
ΔH
-88,0 kJ/mol

Reações relacionadas

Iron(III) Chloride and Sodium Hydroxide Ammonia and Hydrochloric Acid (White Smoke) Calcium Carbonate and Hydrochloric Acid Calcium Chloride and Sodium Carbonate Barium Chloride and Sodium Sulfate Precipitation Calcium Hydroxide and Carbon Dioxide (Limewater Test) Sodium Hydroxide and Hydrochloric Acid Neutralization Potassium Hydroxide and Sulfuric Acid Sodium Carbonate and Hydrochloric Acid Aluminum Hydroxide and Hydrochloric Acid

Frequently Asked Questions

What is the equation for Sodium Hydroxide and Iron(III) Chloride (Rust Color)?
The balanced equation is: 3NaOH + FeCl₃ → Fe(OH)₃ + 3NaCl.
What type of reaction is Sodium Hydroxide and Iron(III) Chloride (Rust Color)?
Sodium Hydroxide and Iron(III) Chloride (Rust Color) is a double replacement reaction.
Is Sodium Hydroxide and Iron(III) Chloride (Rust Color) exothermic or endothermic?
Sodium Hydroxide and Iron(III) Chloride (Rust Color) is exothermic (releases energy). The enthalpy change (ΔH) is -88.0 kJ/mol.