Acetylene gives_precipitates with AgNO3 in ammonium hydroxide solution
Correct answer: A. White
- A. White
- B. Red
- C. Orange
- D. Yellow
Explanation
Acetylene, as a terminal alkyne, reacts with Tollens' reagent (ammoniacal silver nitrate) in an acid-base reaction. Both of its acidic protons are replaced by silver ions, forming a disilver acetylide (AgC=CAg) precipitate, which is off-white in color.
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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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