The expected product from the addition of HCl to CH 3 -CH 2 -CH=CH 2 is

The addition of HCl to an alkene like CH3-CH2-CH=CH2 follows Markovnikov's rule, where the hydrogen atom from HCl adds to the carbon with more hydrogen atoms, and the chlorine atom adds to the carbon with fewer hydrogen atoms, resulting in CH3-CH2-CHCl-CH3.

The expected product from the addition of HCl to CH 3 -CH 2 -CH=CH 2 is

The addition of HCl to an alkene like CH3-CH2-CH=CH2 follows Markovnikov's rule, where the hydrogen atom from HCl adds to the carbon with more hydrogen atoms, and the chlorine atom adds to the carbon with fewer hydrogen atoms, resulting in CH3-CH2-CHCl-CH3.