Question

When treated with ammoniacal cuprous chloride, which one among the following forms copper derivative

• A. $C_2{H}_6$
• B. $C_2{H}_4$
• C. $C_2{H}_2$
• D. $C_6{H}_6$

Answer 1

The correct option is C $C_2{H}_2$

$2N{H}_{4}OH+C{u}_{2}C{l}_2\to 2CuOH+2N{H}_{4}Cl$

$N{H}_{4}OH+CuOH\to \underset{\underset{\left(I\right)hydroxide}{Diamminecopper}}{\left[Cu\right(N{H}_3{)}_2]OH}$

$2\left[Cu\right(NH{)}_3]OH+HC\equiv CH\to \underset{\text{copper acetylide Red ppt.}}{Cu-C\equiv C-Cu}+4N{H}_3+2H_{2}O$