Question
In the Group analysis of cations, Ba ^ 2+ ~\&~ Ca ^ 2+ are precipitated respectively as
JEE Main
Chemistry
Practical Chemistry
2026
JEE Main 2026 (24 January Shift 2)
JEE Main Chemistry Question (2026) — Solution
Options
- A. sulphide & sulphide
- B. chromate & sulphide
- C. carbonate & carbonate
- D. hydroxide & carbonate
Answer
C. carbonate & carbonate
Step-by-step solution
In Group V of cation analysis, both Ba²⁺ and Ca²⁺ are precipitated by adding Na₂CO₃ or (NH₄)₂CO₃ solution. Ba²⁺ precipitates as BaCO₃ (white precipitate) and Ca²⁺ precipitates as CaCO₃ (white precipitate). Both form insoluble carbonates under these conditions, making the answer carbonate & carbonate.
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