In Victor Meyer's test for distinguishing alcohols, what is the exact sequence of colors observed fo — Practical Organic Chemistry and Purification Chemistry Question
Question
In Victor Meyer's test for distinguishing alcohols, what is the exact sequence of colors observed for primary ($1^\circ$), secondary ($2^\circ$), and tertiary ($3^\circ$) alcohols respectively in the final alkaline solution?
Answer: A
💡 Solution & Explanation
In Victor Meyer's test, the alcohol is treated with $P/I_2$, then $AgNO_2$, then $HNO_2$, and finally made alkaline. A primary alcohol yields a red color (due to the sodium salt of nitrolic acid). A secondary alcohol yields a blue color (pseudonitrol). A tertiary alcohol does not react with $HNO_2$ and remains colorless.
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