A coin is analysed by dissolving it in nitric acid. To the resulting s – InterviewSolution

1.	A coin is analysed by dissolving it in nitric acid. To the resulting solution an excess of aqueous Ammonia is added and the mixture is filtered. A brown precipitate remains in the filter paper and a deep blue solution is obtained as the filtrate. Which metals does the coin contain?
Answer» A coin is analysed by dissolving it in nitric acid. To the resulting solution an excess of aqueous Ammonia is added and the mixture is filtered. A brown precipitate remains in the filter paper and a deep blue solution is obtained as the filtrate. Which metals does the coin contain?

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