Thermal Decomposition of Sodium Carbonate Decahydrate

Na₂CO₃·10H₂O → Na₂CO₃ + 10H₂O

Tổng quan

Washing soda (sodium carbonate decahydrate) loses its water of crystallization when heated. This dehydration reaction produces anhydrous sodium carbonate (soda ash). The hydrated crystals are transparent but become opaque white powder as water is driven off (efflorescence).

Người tham gia

Vai trò	Chất	Hệ số	Trạng thái
Sản phẩm	Sodium Carbonate Na₂CO₃	1	(s)
Sản phẩm	Water H₂O	10	(g)

Ví dụ thực tế

When washing soda crystals are left in dry air, they slowly lose water and turn into a white powder through this efflorescence process.

Tầm quan trọng công nghiệp

Anhydrous sodium carbonate (soda ash) is a major industrial chemical used in glass manufacturing, detergents, water treatment, and as a chemical feedstock.

Tính chất

Loại: Decomposition
Thuận nghịch: Có
Năng lượng: Thu nhiệt
ΔH: 155,0 kJ/mol

Phản ứng liên quan

Decomposition of Ammonium Nitrate Decomposition of Calcium Hypochlorite Decomposition of Carbonic Acid Decomposition of Iron(II,III) Oxide (Direct Reduction) Decomposition of Nitrous Oxide (Laughing Gas) Decomposition of Barium Peroxide Decomposition of Sodium Bicarbonate Decomposition of Water (Electrolysis) Thermal Decomposition of Copper(II) Carbonate Cracking of Octane (Thermal Cracking)

Frequently Asked Questions

What is the equation for Thermal Decomposition of Sodium Carbonate Decahydrate?

The balanced equation is: Na₂CO₃·10H₂O → Na₂CO₃ + 10H₂O.

What type of reaction is Thermal Decomposition of Sodium Carbonate Decahydrate?

Thermal Decomposition of Sodium Carbonate Decahydrate is a decomposition reaction. It is reversible under certain conditions.

Is Thermal Decomposition of Sodium Carbonate Decahydrate exothermic or endothermic?

Thermal Decomposition of Sodium Carbonate Decahydrate is endothermic (absorbs energy). The enthalpy change (ΔH) is 155.0 kJ/mol.