Thermal Decomposition of Mercury(II) Oxide

2HgO → 2Hg + O2

概要

Mercury(II) oxide decomposes when heated to about 500 C into mercury metal and oxygen gas. This reaction is historically significant as it was used by Joseph Priestley in 1774 to discover oxygen. The red powder turns into shiny mercury droplets when heated.

参加者

役割 物質 係数 状態
生成物 Oxygen O 1 (g)
生成物 Mercury Hg 2 (l)

日常の例

This reaction is primarily of historical significance, demonstrating a fundamental chemical principle in the discovery of oxygen.

産業上の重要性

工業的にはもう使用されないが、この反応は近代化学の発展と元素・化合物の理解に極めて重要であった。

特性

タイプ
Decomposition
可逆的
はい
エネルギー
吸熱性
ΔH
181.6 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 Mercury(II) Oxide?
The balanced equation is: 2HgO → 2Hg + O₂.
What type of reaction is Thermal Decomposition of Mercury(II) Oxide?
Thermal Decomposition of Mercury(II) Oxide is a decomposition reaction. It is reversible under certain conditions.
Is Thermal Decomposition of Mercury(II) Oxide exothermic or endothermic?
Thermal Decomposition of Mercury(II) Oxide is endothermic (absorbs energy). The enthalpy change (ΔH) is 181.6 kJ/mol.