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Write the name and general formula of a chain of hydrocarbons in which an addition reaction with hydrogen can take place. Stating the essential conditions

required for an addition reaction to occur, write the chemical equation giving the name of the reactant and the product of such a reaction.


Ethe to ethane 
the unsaturated hydrocarbons in the presence of catalysts like nickle or palladium
is conerted into saturated
     H   H                                     H  H
      ↑  ↑  ( catalyst)   =                ↑  ↑
     C=C  ⇒                          H←C-C→H
      ↓   ↓                                       ↓   ↓                                     
      H  H                                      H   H

2 3 2
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