Question

Question 7 1 pts What is the major product of the following reaction? excess HI OO

Answer 1

According to the Markownikov's rule, in addition reaction of a hydrogen halide to an alkene/alkyne, the Hydrogen atom will get bonded to the carbon atom (forming the double/triple bond) containing larger number of hydrogen atoms and the halogen atom will be bonded to the other carbon of the double/triple bond.

So in given reaction, as there is excess HI, so first it will add to the double bond to give the product as shown.

​​​​​​Further more of HI will add to give the final product as shown.

HI

I HT I I Final broduct

So we can see that the hydrogen gets added to the terminal C as it had 1 Hydrogen to begin with and the halogen (I) gets added to the second carbon (part of the triple bond), this happens till we get a saturated compound shown as the final product where both I are attached to the second carbon. So option C is the correct answer.