Meaning & Definition of word "Alkali"
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Alkali
/ˈæl.kə.laɪ/
noun:
- 1. A class of compounds that include sodium, potassium, lithium, and other elements that form hydroxides in water and are typically soluble in water.
- Example: Sodium hydroxide is a strong alkali used in many industrial processes.
- 2. Any substance that has a pH greater than 7 and can neutralize acids.
- Example: In chemistry, we often use alkalis to balance the acidity of solutions.
- 3. The soluble hydroxides of alkali metals, such as sodium and potassium.
- Example: Potassium carbonate is an example of an alkali that is used in the production of glass.
- 4. A basic substance that can react with acids to form salts.
- Example: Lime is commonly used in agriculture as an alkali to improve soil pH.
Etymology
From Arabic الكالي ('Al-qāli') meaning 'the ashes of saltwort'.
Common Phrases and Expressions
alkali metal:
Any of the elements in group 1 of the periodic table, which are highly reactive.
strong alkali:
An alkali that has a high pH value, often used in strong chemical reactions.
Related Words
base:
A substance that can accept hydrogen ions or donate electron pairs in reactions.
bicarbonate:
A salt containing the anion HCO3−, known for its buffering properties.
Slang Meanings of alkali
Meaning: Refers to someone or something that is overly basic or plain.
Example Sentence: That outfit is so alkali; it needs some flair!