Which of the following Group I cations forms a white chloride precipitate that completely dissolves — Qualitative and Quantitative Analysis Chemistry Question
Question
Which of the following Group I cations forms a white chloride precipitate that completely dissolves in hot water but reprecipitates upon cooling?
Answer: C
💡 Solution & Explanation
Lead(II) chloride ($PbCl_2$) is a white precipitate that is uniquely soluble in boiling hot water, allowing it to be separated from $AgCl$ and $Hg_2Cl_2$ in Group I analysis.
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