Azeotropy - azeotropy

Japanese: 共沸 - きょうふつ(英語表記)azeotropy
Azeotropy - azeotropy
When distilling a liquid mixture, the composition of the solution and the composition of the vapor become identical at a certain temperature, resulting in the distillate and residue having the same composition. The boiling point reaches a maximum or minimum at that temperature. Therefore, a liquid mixture with an azeotropic composition cannot be separated into its pure components by distillation. For example, when ethyl alcohol and water are 95.57% ethyl alcohol by weight, the boiling point is 78.15°C, and the composition of the distillate and residue are the same. Generally, commercially available ethyl alcohol has this composition due to azeotropy.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:
混合液体を蒸留するとき,ある一定の温度で溶液の組成と蒸気の組成とが一致し,留出物と残留物の組成が同じものとなる現象のこと。沸点はそこで極大または極小を示す。したがって共沸する組成の混合液体は蒸留によって純粋成分に分けることはできない。たとえばエチルアルコールと水は,エチルアルコール 95.57重量%で沸点は 78.15℃となり,留出液と残留液の組成は同じものとなる。一般に市販のエチルアルコールがこの組成になっているのは共沸のためである。

出典 ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について 情報

<<:  Thoracic disc herniation - thoracic disc herniation

>>:  Breast surgery - Breast augmentation surgery

Recommend

The Conqueror

…reigned from 1066 to 1087. Also known as the Con...

Aradidae

…A general term for any insect in the family Arad...

Milky Way - Amanogawa

A faintly glowing band that runs along a great ci...

Anodorhynchus hyacinthinus (English name) Anodorhynchushyacinthinus

…Because they are large and beautiful, they are o...

Elisabeth von R.

One of the cases reported by S. Freud in Studies o...

Miobatrachus

...Some species, such as the upside-down frog Pse...

Indian Art

A general term for art created in the Indian subc...

Paleotext - Komonjogaku

Japan A large number of ancient documents from be...

Christian Archaeology

Archaeology is a field of study that seeks to she...

Ami tribe - Ami tribe (English spelling)

An ethnic group among the indigenous people of Tai...

Indian kudzu (English spelling)

...The leaves are rich in water-soluble carbohydr...

verruca vulgaris (English spelling) verruca vulgaris

… [Viral warts] Warts caused by viruses are cause...

Svoboda, Ludvík

Born: November 25, 1895 in Hroznatyn, Moravia [Die...

Mirror polishing - Kyomenkenma

...A general term for surface finishing methods t...

Umemura Suizan

1839-1906 A printing engineer and copperplate eng...