cupric sulfate
Definition
- Noun:
- A chemical compound: "cupric sulfate" is an inorganic compound with the chemical formula CuSO₄. It is a copper salt formed by the reaction of sulfuric acid with copper or copper oxide.
- A blue crystalline solid: In its most common hydrated form (CuSO₄·5H₂O), it appears as bright blue crystals or powder.
Examples of Usage
- Noun:
- The laboratory experiment required a solution of cupric sulfate.
- Cupric sulfate is often used as an algicide in ponds and water treatment.
Advanced Usage
- "Cupric sulfate pentahydrate": This specifies the common blue, hydrated form of the compound containing five water molecules.
- The characteristic blue color is due to cupric sulfate pentahydrate.
Variants and Related Words
- Copper(II) sulfate: This is the systematic IUPAC name for the same compound, where (II) indicates the oxidation state of the copper ion.
- Copper(II) sulfate is synonymous with cupric sulfate.
- Blue vitriol: A common historical or industrial name for cupric sulfate pentahydrate.
- Blue vitriol was used historically in dyeing and leather tanning.
Synonyms
- Copper sulfate: A more general, commonly used name.
- Blue stone: An informal name, especially in agricultural contexts.
Notes on Meaning
- The term "cupric" specifically denotes copper in the +2 oxidation state (Cu²⁺). This distinguishes it from "cuprous" compounds, which contain copper in the +1 state (Cu⁺).
- While a dictionary might list "đường sunfat" (sugar sulfate) as a translation, this is a phonetic transliteration error and is chemically incorrect. The correct substance is a copper salt, not related to sugar.
Noun
-
a copper salt made by the action of sulfuric acid on copper oxide
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