Identify a reagent from the following list which can easily... | CHEMISTRY - ALKYNES | SolveeIt | Solveeit

Today, August 18

Question

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

A

Bromine, CCl4

B

H2, Lindlar catalyst

C

Dilute H2SO4, HgSO4

D

Ammonical Cu2Cl2 solution

Answer

Ammonical Cu2Cl2 solution

Explanation

Solution

CH3–CH2–CŗCH $\xrightarrow [ \mathrm { NH } _ { 4 } \mathrm { OH } ] { \mathrm { Cu } _ { 2 } \mathrm { Cl } _ { 2 } }$ $\mathrm { CH } _ { 3 } - \mathrm { CH } _ { 2 } - \mathrm { C } \equiv \stackrel { \ominus } { \mathrm { C } } \mathrm { C } \stackrel { \oplus } { \mathrm { u } }$ Blood red Colour

+ NH4Cl + H2O