Thermal Decomposition of Sodium Carbonate Decahydrate

Na2CO3·10H2O → Na2CO3 + 10H2O

概要

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).

参加者

役割 物質 係数 状態
生成物 Sodium Carbonate Na₂CO₃ 1 (s)
生成物 Water H₂O 10 (g)

日常の例

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

産業上の重要性

無水炭酸ナトリウム（ソーダ灰）はガラス製造、洗剤、水処理、化学原料に使用される主要な工業化学物質である。

特性

タイプ
Decomposition
可逆的
はい
エネルギー
吸熱性
ΔH
155.0 kJ/mol

関連する反応

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.