Predict the product C obtained in the following reaction of butyne-1.
`CH_(3)CH_(2)C-=CH+HCl rarr B overset(HI)rarr C`

Options

A. `CH_(3)-underset(Cl)underset(|)(CH)-CH_(2)CH_(2)I`
B. `CH_(3)-CH_(2)-CH_(2) overset(I)overset(|)underset(Cl)underset(|)C-H`
C. `CH_(3)-CH_(2)- overset(I)overset(|)CH-CH_(2)Cl`
D. `CH_(3)CH_2 - overset(I)overset(|)underset(Cl)underset(|)-CH_(3)`

Answer

D

Explanation

`underset("but-1-yne")(CH_(3)CH_(2))-C-= CH + overset(oplus)(HCl) rarr CH_(3) - CH_(2) - underset(Cl)underset(|)C=CH_(2) overset(oplus)overset(HI)rarr CH_(3)-CH_(2) -overset(I)overset(|)underset(Cl)underset(|)C-CH_3`