File:Handmade_soap_cropped_and_simplified.jpg · Wikimedia Commons · See Wikimedia Commons

EntityQ11193· pop 131· linked from 986 articles

鹽基

Also known as alkaline substance, alkali, basic substance, basic compound, chemical base, basic chemical

chemical substance that can react with an acid, accepting hydrogen ions (protons) or more generally, donating a pair of valence electrons

AI overview

A base is a chemical substance that reacts with acids by accepting hydrogen ions or sharing electrons, forming new compounds in the process. Bases matter because they're fundamental to chemistry and everyday life—they're found in everything from cleaning products to biological systems, and understanding how they interact with acids is essential for predicting and controlling chemical reactions.

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

Subclass of: chemical compound
Image: Potassium hydroxide.jpg
Has use: acid–base reaction

Show 5 more facts

Commons category: Bases
opposite of: acid
topic's main category: Category:Bases (chemistry)
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
different from: alkali

Sources (2)

via Wikidata · CC0

Article · 中文

鹽基或鹼基，有時也稱做鹼（儘管「鹼」具有多種意義）。這是根據布仑斯惕-劳里學說關於酸和鹽基的部份，鹽基可以簡單想像成吸收質子的物質。額外的定義包括提供孤立電子對（由吉爾伯特·路易斯提出），以及是氫氧根離子的來源（由阿伦尼乌斯提出）。這三種定義下，鹽基都是會和酸反應的物質，符合纪尧姆-弗朗索瓦·鲁埃勒在18世紀中提出的概念。阿伦尼乌斯鹽基可以影響水的自電离化学平衡，讓氫離子的活性度比在純水中要低，因此，在標準狀態下的pH值會大於7.0。可溶於水的鹽基若含有OH−，且會釋放相當量的OH−離子，即為碱。氧化物、氫氧化物、醇盐都是碱性，而弱酸的共軛酸鹼對也是較弱的鹽基。酸和鹽基的化學作用恰好相反，酸會增加水中的水合氢离子（H3O+）濃度，鹽基則會減少水合氢离子濃度。酸和鹽基在水溶液中的反應稱為中和反应，會產生水以及盐。若水溶液已經飽和，就會有盐類的沉淀。

Abstract from DBpedia / Wikipedia · CC BY-SA