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प्रश्न
How will distinguish 1 – butyne and 2 – butyne?
उत्तर
\[\ce{\underset{\text{2-butyne}}{CH3 - C ≡ C - CH3}->[AgNO3][NH4OH] No reaction}\]
\[\ce{\underset{\text{1 - butyne}}{CH3 - CH2 - C ≡ CH} ->[AgNO3][NH4OH] \underset{\text{Silver acetylide}}{CH3 - CH2 - C ≡ CAg}}\]
1 – butyne reacts with ammoniacal AgNO3 solution it forms white precipitate of silver acetylide but, 2 – butyne doesnot reacts with ammoniacal AgNO3 solution.
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\[\begin{array}{cc}
\phantom{..............................}\ce{CH3}\\
\phantom{...........................}|\\
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|\phantom{....................................}\\
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\end{array}\]
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\[\begin{array}{cc}
\phantom{..............................}\ce{CH3}\\
\phantom{............................}|\\
\ce{CH3 - C = CH2 + HBr ->[benzoyl][peroxide] CH3 - CH - CH2Br}\\
|\phantom{....................................}\\
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\end{array}\]
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