Which reagents shown below would be expected to convert 2-pentyne to (Z)-2-pentene? A) H₂, Pt B) Na, NH₃ C) H₂, Lindlar's catalyst D) excess HCl E) HgSO₄, H₂O

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The hydrogenation reaction using Lindlar's catalyst (H₂) is a selective method that converts alkynes to cis-alkenes (Z isomer) without reducing them all the way to alkanes. Therefore, option C is the only reagent that would be expected to convert 2-pentyne to (Z)-2-pentene.

Which Reagents Shown Below Would Be Expected to Convert 2-Pentyne