Predict the major, organic product for the following reaction.

In the hydrogenation of $1_{\text{decyne}}$ to $\text{decane}$, how many equivalents of ${H2}_{\text{gas}}$ are required for complete reduction?

Which compound is formed when cyclohexene is reacted with $H_2$ in the presence of Pt catalyst?

Predict the product of the following multi-step synthesis:

Answer Problem 39, parts a–h, using 2-butyne as the starting material instead of propyne.

h. H₂/Lindlar catalyst

Answer Problem 39, parts a–h, using 2-butyne as the starting material instead of propyne.

g. excess H₂, Pd/C