Alkyne Reactions

Question 1

unsaturated hydrocarbons that contain a -C ΞC- and such that one sp hybridized carbon atom

Answer 1

alykne

Question 2

has linear geometry

Answer 2

alkyne

Question 3

similar to alkenes, thesealso contain pi electrons that are capable of undergoing electrophilic addition reaction

Answer 3

alkyne

Question 4

happens in the presence of hydrogen gas and metal catalyst also produces alkyne just like in alkene

Answer 4

hydrogenation

Question 5

catalyst in hydrogenation in alkynes

Answer 5

Lindlar’s Catalyst (Pd in CaCO3 and quinoline)
Na in NH3

Question 6

addition of to an alkyne follows Markovnikov’s rule and one may use one or two moles of the reagent

Answer 6

HX and X2

Question 7

reactions in alkyne

Answer 7

hydrogenation
halohydrogenation
halogenation
hydration
oxidation

Question 8

requires the presence of mercuric sulfate and forms a ketone instead of an alcohol

Answer 8

hydration

Question 9

the number of carbon chain in an alkyne can be increased by reaction of a terminal alkyne with a very strong base followed by reaction with alkyl halide (RX).

Answer 9

formation of acetylide ion

Question 10

– have an acidic proton and therefore reacts with metal or very strong base

Answer 10

terminal alkyne

Question 11

the products formed in the oxidation of alkyne depends on the type of alkyne; internal or terminal alkyne

Answer 11

oxidation reaction