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- Base (chemistry) - Wikipedia
A base was therefore a metal hydroxide such as NaOH or Ca (OH) 2 Such aqueous hydroxide solutions were also described by certain characteristic properties They are slippery to the touch, can taste bitter [1] and change the color of pH indicators (e g , turn red litmus paper blue)
- Leveling effect - Wikipedia
Acid-base discrimination windows of common solvents [1] Leveling effect or solvent leveling refers to the effect of solvent on the properties of acids and bases The strength of a strong acid is limited ("leveled") by the basicity of the solvent Similarly the strength of a strong base is leveled by the acidity of the solvent
- Acid–base reaction - Wikipedia
In chemistry, an acid–base reaction is a chemical reaction that occurs between an acid and a base It can be used to determine pH via titration Several theoretical frameworks provide alternative conceptions of the reaction mechanisms and their application in solving related problems; these are called the acid–base theories, for example, Brønsted–Lowry acid–base theory Their
- Lewis acids and bases - Wikipedia
Lewis acids and bases are named for the American physical chemist Gilbert N Lewis [2] The terms nucleophile and electrophile are sometimes interchangeable with Lewis base and Lewis acid, respectively
- Brønsted–Lowry acid–base theory - Wikipedia
The Brønsted–Lowry theory (also called proton theory of acids and bases[1]) is an acid–base reaction theory, developed independently in 1923 by physical chemists Johannes Nicolaus Brønsted (in Denmark) and Thomas Martin Lowry (in the United Kingdom) [2][3] The basic concept of this theory is that when an acid and a base react with each other, the acid forms its conjugate base, and the
- Organic base - Wikipedia
An organic base is an organic compound which acts as a base Organic bases are usually, but not always, proton acceptors They usually contain nitrogen atoms, which can easily be protonated For example, amines or nitrogen-containing heterocyclic compounds have a lone pair of electrons on the nitrogen atom and can thus act as proton acceptors [1] Examples include: pyridine alkylamines, such
- HSAB theory - Wikipedia
Essentially, the theory states that soft acids prefer to form bonds with soft bases, whereas hard acids prefer to form bonds with hard bases, all other factors being equal [7] It can also be said that hard acids bind strongly to hard bases and soft acids bind strongly to soft bases The HSAB classification in the original work was largely based on equilibrium constants of Lewis acid base
- Alkali - Wikipedia
Common properties of alkalis and bases Alkalis are all Arrhenius bases, ones which form hydroxide ions (OH −) when dissolved in water Common properties of alkaline aqueous solutions include: Moderately concentrated solutions (over 10 −3 M) have a pH of 10 or greater This means that they will turn phenolphthalein from colorless to pink
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