In a Qualitative Cation Analysis, the Unknown Ion Is Precipitated

question 17

Multiple Choice

In a qualitative cation analysis, the unknown ion is precipitated by HCl, remains as a chloride solid in hot water, and the precipitate turns black upon addition of ammonia. The unknown ion is ________.

• A) Hg22+
• B) Pb2+
• C) Ag+
• D) K+
• E) Cd2+

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