A white sublimable substance, that turns black on treatment with an NH3 solution can be: — Qualitative and Quantitative Analysis Chemistry Question
Question
A white sublimable substance, that turns black on treatment with an NH3 solution can be:
Answer: A
💡 Solution & Explanation
Hg2Cl2 (calomel) is white and sublimable. On reaction with NH3 it forms a mixture of finely divided black Hg and white Hg(NH2)Cl, appearing black overall.
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