(a)
Interpretation:
Balanced equation for the hydrogenation of 2-butyne has to be written.
Concept Introduction:
Addition of hydrogen molecule to an unsaturated bond present in hydrocarbon is known as hydrogenation. During hydrogenation, the unsaturated bond present is broken and a carbon‑hydrogen bond is formed. Hydrogenation can be accomplished by use of metal catalyst such as platinum, nickel, or palladium.
Balanced equation is the one that contains same number of atoms of different kind equal on both sides of the equation.
(b)
Interpretation:
Balanced equation for the halogenation of 2-pentyne has to be written.
Concept Introduction:
Addition of halogen molecule to an unsaturated bond present in hydrocarbon is known as halogenation. During halogenation, the unsaturated bond present is broken and a carbon‑halogen bond is formed.
Balanced equation is the one that contains same number of atoms of different kind equal on both sides of the equation.

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