Question

please answer questions 5-8

Question 5 What is the systematic name of the following compound? Br CH3 CEC CH2 CCH3 Cнз 2-bromo-2-methyl-4-hexyne 3-bromo-5-heptyne 5-bromo-2-heptyne 5-bromo-5,5-dimethylhexyne 5-bromo-5-methyl-2-hexyne

Answer 1

5)

As alkyne functional group has Highest priority than bromine

The numbering starts from alkyne side so we have six carbons and alkyne is at 2 position and bromine and methyl are at 5 position

So name is

5-bromo-5-methyl-2-hexyne

6)

In the first carbon it has double bond so it is sp2 hybridisation

And in the second carbon it has triple bond so it is sp hybridisation

7)

Sp hybridisation has triple bond in that it has 1 sigma and 2 pi bonds

8)

Alkynes are soluble in organic solvents so

Option 4 is the answer