Which of the following compounds reacts with ammoniacal AgNO3 to form a precipitate?
Correct answer: A. But-1-yne
- A. But-1-yne
- B. But-1-ene
- C. But-2-yne
- D. But-2-ene
Explanation
Ammoniacal silver nitrate (Tollens reagent) reacts specifically with terminal alkynes, which have an acidic hydrogen atom on a triple-bonded carbon. But-1-yne is a terminal alkyne and will form a white precipitate of silver butynide, while the others will not react.
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About Chemistry of Hydrocarbons
Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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