Fill in the blanks and or circle the correct bold word. The pKa of an alkyne is

Question

Fill in the blanks and or circle the correct bold word. The pKa of an alkyne is aboutwhile the pKa of an alkane is aboutHydrogenation of an alkyne can / cannot be controlled to give an alkene. Halogenation of alkanes with Cl_2 is more less selective than halogenation with Br_2 An alkyne is more / less acidic than an alkene because In anti / syn additions the new atoms add to the opposite faces of an alkene. An S_n2 reaction involves the collision of two alkyl halides to form a new carbon-carbon bond. Addition of two equivalents of HBr to an alkyne results in a vicinal / geminaldibromide.

Explanation / Answer

a)25,51

b)can

c)more

d)alkyne is more acidic than alkene because of presence of sp carbon bonds which are more electronegative than sp2 bonds of alkene

e)anti

f)false

g)geminal

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