Sulfurous Acid and Sodium Hydroxide

H2SO3 + 2NaOH → Na2SO3 + 2H2O

Tổng quan

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.

Người tham gia

Vai trò Chất Hệ số Trạng thái
Chất phản ứng Sodium Hydroxide NaOH 2 (aq)
Sản phẩm Water H₂O 2 (l)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

Sodium sulfite is used in the pulp and paper industry, as a photographic fixer component, in water treatment for dechlorination, and as an oxygen scavenger in boiler water.

Tính chất

Loại
Acid-Base
Thuận nghịch
Không
Năng lượng
Tỏa nhiệt
ΔH
-106,0 kJ/mol

Phản ứng liên quan

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.