Question

In the addition of hydrogen halides (HX) to alkenes according to Markovnikov's rule, where does the hydrogen atom add? a) The carbon atom with fewer hydrogen atoms

b) The carbon atom with more hydrogen atoms
c) Alternately to both carbon atoms
d) Randomly to any carbon atom

Answer 1

In the addition of hydrogen halides (HX) to alkenes according to Markovnikov's rule, the hydrogen atom adds to the carbon atom with fewer hydrogen atoms.

Step-by-step explanation:

In the addition of hydrogen halides (HX) to alkenes according to Markovnikov's rule, the hydrogen atom adds to the carbon atom with fewer hydrogen atoms.

This can be illustrated with an example: when hydrogen bromide (HBr) adds to propene (CH3CH=CH2), the hydrogen atom will add to the carbon atom at the double bond, which has fewer hydrogen atoms.

So, the correct answer is a) The carbon atom with fewer hydrogen atoms.