In which of the following redox reaction precipitate is not formed ? | Reaction Mechanism — Chem-Mantra | Chem-Mantra

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Question

In which of the following redox reaction precipitate is not formed ?

Answer: A

💡 Solution & Explanation

Cr^3+(aq.) + Na2O2 sol. -> CrO4^2-(aq.) (soluble). The others form FeS↓, MnO(OH)2↓, and Fe(OH)3↓.

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