Which anion will form a precipitate with [tex]Ca^{2+}[/tex]?
Answer (3)
One example of an anion that will form a precipitate with Ca 2+ is CO3 *2- The substance formed would be CaCO3 of calcium carbonate. *
**Answer : **Precipitation reactions occur when particular species of cations and anions in an aqueous solution combines to form an insoluble ionic solid which can be called as precipitate.
Here, the anions that will mostly form precipitate with C a + 2 are OH anions, Cl ions, Br ions, S O 4 ions, C 2 H 3 O 2 ions.
Calcium has valency of 2 electrons in its valence shell. So, any anion that can satisfy the valency of calcium can form a compound with calcium.
Calcium ions C a 2 + will form precipitates with anions such as hydroxide ( O H − ) , carbonate ( C O 3 2 − ) , and certain sulfates ( S O 4 2 − ) . These reactions are guided by solubility rules that indicate the formation of insoluble compounds. By understanding these interactions, one can predict precipitation reactions in aqueous solutions.
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