Hydrogenation Of Alkynes

Question 1

Products(Syn)

Answer 1

Alkane(Pd,Pt)

Alkene(P-2, Lindlar’s)

Question 2

Reactants(Trans)

Answer 2

Alkyne

Li/Na in NH3 -78°

Question 3

Products(Trans)

Answer 3

Alkene(Trans)

Question 4

Does the catalytic process lower or higher the activation energy?

Answer 4

Lowers(exothermic)

Question 5

What kind of reactions are these?

Answer 5

Addition

Question 6

Reactants(Syn)

Answer 6

Alkene/Alkyne
H2
Catalyst(Pd,Pt,Ni to give alkane)
(Ni2B/Lindlar’s cat to give Alkene)