Which among the following gives ppt. with terminal alkynyl hydrogen?
Correct answer: C. Both A and B
- A. Ammonical silver nitrate
- B. Ammoniacal cuprous chloride
- C. Both A and B
- D. None of these
Explanation
Terminal alkynes have a slightly acidic hydrogen on the triple-bonded carbon. They react with ammoniacal silver nitrate to form silver acetylides with ammoniacal cuprous chloride to form copper(I) acetylides, both giving precipitates. Thus, both reagents can detect terminal alkynes.
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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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