Sulfurous Acid and Sodium Hydroxide

H₂SO₃ + 2NaOH → Na₂SO₃ + 2H₂O

Visão geral

Sulfurous acid reacts with two equivalents of sodium hydroxide to form sodium sulfite and water. Sulfurous acid is formed when sulfur dioxide dissolves in water and is a diprotic acid. It is unstable and cannot be isolated as a pure substance.

Participantes

Papel	Substância	Coeficiente	Estado
Reagente	Sodium Hydroxide NaOH	2	(aq)
Produto	Water H₂O	2	(l)

Exemplo do cotidiano

Sodium sulfite is used as a preservative in dried fruits and wine, where it prevents oxidation and browning.

Importância industrial

O sulfito de sódio é utilizado na indústria de pasta e papel, como componente fixador fotográfico, no tratamento de água para descloração e como sequestrador de oxigénio em água de caldeiras.

Propriedades

Tipo: Acid-Base
Reversível: Não
Energia: Exotérmico
ΔH: -106,0 kJ/mol

Reações relacionadas

Hydrochloric Acid and Barium Hydroxide Acetic Acid and Sodium Acetate Buffer System Acetic Acid Dissociation in Water Ammonia and Hydrochloric Acid Ascorbic Acid and Sodium Hydroxide Barium Hydroxide and Ammonium Thiocyanate (Endothermic) Carbonic Acid and Sodium Hydroxide Aluminum Hydroxide as Amphoteric Acid with NaOH Aluminum Chloride and Chloride Ion (Lewis Acid-Base) Formic Acid and Sodium Hydroxide

Frequently Asked Questions

What is the equation for Sulfurous Acid and Sodium Hydroxide?

The balanced equation is: H₂SO₃ + 2NaOH → Na₂SO₃ + 2H₂O.

What type of reaction is Sulfurous Acid and Sodium Hydroxide?

Sulfurous Acid and Sodium Hydroxide is a acid-base reaction.

Is Sulfurous Acid and Sodium Hydroxide exothermic or endothermic?

Sulfurous Acid and Sodium Hydroxide is exothermic (releases energy). The enthalpy change (ΔH) is -106.0 kJ/mol.