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In chemistry, an alkali (/ ˈ æ l k ə l aɪ /; from Arabic: القلوي, romanized: al-qaly, lit. 'ashes of the saltwort') is a basic, ionic salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as a base that dissolves in water. A solution of a soluble base has a pH greater than 7.0.
Alkali, any of the soluble hydroxides of the alkali metals—i.e., lithium, sodium, potassium, rubidium, and cesium. Alkalies are strong bases that turn litmus paper from red to blue; they react with acids to yield neutral salts; and they are caustic and in concentrated form are corrosive to organic.
May 27, 2024 · Alkali metal, any of the six elements of Group 1 (Ia) of the periodic table—lithium, sodium, potassium, rubidium, cesium, and francium. The alkali metals are so called because reaction with water forms alkalies (i.e., strong bases capable of neutralizing acids).
Aug 29, 2023 · Alkali metals are so called because when alkali metals react with water, they create highly alkaline substances. Alkalinity refers to the pH of the substance, or the ability to neutralize acid. Substances that are highly alkaline can form strong bases able to neutralize acids and maintain a stable pH level.
The meaning of ALKALI is a soluble salt obtained from the ashes of plants and consisting largely of potassium or sodium carbonate; broadly : a substance (such as a hydroxide or carbonate of an alkali metal) having marked basic properties. How to use alkali in a sentence.
Acid + alkali → salt + water. We say that the acid and alkali are the reactants, and the salt and water are the products of a neutralisation reaction. In chemistry a salt is any compound formed...
ALKALI definition: 1. a substance that has the opposite effect or chemical behaviour to an acid 2. a substance that…. Learn more.
The alkali metals are potent reductants whose chemistry is largely that of ionic compounds containing the M+ ion. Alkali metals have only a weak tendency to form complexes with simple Lewis bases. …
In chemistry, an alkali is an aqueous (from water) solution with a pH value of more than 7. The word 'Alkali' comes from the Arabic 'qali' meaning 'from the ashes' since ashes mixed with water used as cleaning products (such as soaps) are made of alkali materials.
alkali, Inorganic compound, any soluble hydroxide (―OH) of the alkali metals: lithium, sodium, potassium, rubidium, and cesium. More broadly, ammonium hydroxide ( see ammonia) and soluble hydroxides of the alkaline earth metals are also called alkalies.
