Question

Identify the reagent from the following list which can easily distinguish between 1-butyne and 2-butyne.

• A. Bromine water
• B. Baeyer’s reagent
• C. Dilute $\mathrm { H } _ { 2 } \mathrm { SO } _ { 4 } + \mathrm { HgSO } _ { 4 }$
• D. Ammoniacal$\mathrm { Cu } _ { 2 } \mathrm { Cl } _ { 2 }$

Answer 1

Answer: (D)

Ammoniacal$\mathrm { Cu } _ { 2 } \mathrm { Cl } _ { 2 }$

Answer 2

: Ammoniacal $\mathrm { Cu } _ { 2 } \mathrm { Cl } _ { 2 }$reacts with terminal alkynes to give red precipitate.