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Chemistry - Salt Analysis Question with Solution | TestHub

ChemistrySalt AnalysisCATION miscellaneous/mixedHard2 minPYQ_2011

ChemistryHardsingle choice

Passage / Comprehension

Paragraph:When a metal rod $M$ is dipped into an aqueous colourless concentrated solution of compound $N$ , the solution turns light blue. Addition of aqueous $NaCl$ to the blue solution gives a white precipitate $O$ . Addition of aqueous $NH_{3}$ dissolves $O$ and gives an intense blue solution.

Question:The final solution contains

Options:

Answer:

Solution:

Since in the beginning, concentrated $AgNO_{3}$ solution was taken, some $AgNO_{3}$ remain in solution which gives white precipitate of $AgCl$ on addition of $NaCl$ . The precipitate finally dissolve in ammonia and $Cu^{2 +}$ present in solution also forms complex with ammonia as

Stream:JEESubject:ChemistryTopic:Salt AnalysisSubtopic:CATION miscellaneous/mixed

⏱ 2mℹ️ Source: PYQ_2011

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