Home Preparation for National Talent Search Examination (NTSE)/ Olympiad
Chapter : 6. Carbon and Its Compound
Addition Reactions
67. Addition Reactions : Those reactions in which unsaturated compounds react with a molecule like H2, Cl2, etc., to form another saturated compounds are called addition reactions. 72. Addition of Hydrogen : Ethyne reacts with hydrogen in the presence of a catalyst to give Ethane. Two molecules of hydrogen are added across the carbon-carbon triple bond.
73. Addition of Chlorine : Two molecules of chlorine react with ethyne to form 1, 1, 2, 2-tetrachloroethane.
74. Addition of HCl : Ethyne reacts with HCl in the presence of mercuric chloride (HgCl2) to form vinyl chloride which is monomer of polyvinyl chloride (PVC) (used as plastic)