Question

C2H2 ⇒(CuCl , NH4Cl)

Answer 1

2HC≡CH —(80°C, H+, CuCl2, NH4Cl)→ CH2=CH-C≡CH

это не точно.

Answer 2

This notation likely refers to the reaction of acetylene (C2H2) with copper chloride (CuCl) and ammonium chloride (NH4Cl) in the presence of heat or other catalysts. The exact reaction and products formed would depend on the specific conditions and concentrations of the reactants used.