cupric
/'kju:prik/
Definition
Adjective: 1. Of or containing divalent copper: Pertaining to, derived from, or containing copper in its +2 oxidation state (Cu²⁺). This term is used specifically in chemistry to distinguish compounds where copper has a valence of two from those where it has a valence of one (cuprous).
Usage
- The term "cupric" is used attributively to modify nouns, primarily in scientific and chemical contexts. It specifies the oxidation state of copper within a compound.
- Example: "Cupric oxide" (CuO) is a black powder, whereas "cuprous oxide" (Cu₂O) is red.
Examples
- Adjective:
- The solution turned blue due to the presence of cupric ions.
- Cupric sulfate is commonly used in agriculture and electroplating.
- The experiment required the synthesis of a cupric compound.
Advanced Usage
- "Cupric" vs. "Copper": While "copper" refers to the element itself (Cu), "cupric" specifies the ionic form (Cu²⁺). For example, "copper wire" is the metal, but "cupric chloride" is a specific chemical compound.
- Systematic Naming: In modern IUPAC nomenclature, the term "copper(II)" is often preferred over "cupric," though "cupric" remains in common use, especially in older literature and specific compound names.
Variants and Related Words
- Cuprous (adj): Of or containing monovalent copper (Cu⁺). Example: .
- Copper (n): The chemical element (Cu).
- Copper(II) (adj): The systematic equivalent of "cupric."
Synonyms
- Copper(II): The preferred systematic synonym in modern chemical nomenclature.
Notes
- The term is derived from the Latin , meaning copper.
- It is almost exclusively used in technical, industrial, and academic contexts related to chemistry, metallurgy, and materials science.
Adjective
-
of or containing divalent copper
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