What is the stereochemical outcome of the addition of H2 across an alkene?

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Question: What is the stereochemical outcome of the addition of H2 across an alkene?

Options:

Correct Answer: Syn addition

Solution:

The addition of H2 across an alkene occurs via syn addition, resulting in both hydrogens adding to the same side of the double bond.

What is the stereochemical outcome of the addition of H2 across an alkene?

What is the stereochemical outcome of the addition of H2 across an alkene?

Step 1: Understand that an alkene is a molecule with a double bond between two carbon atoms.
Step 2: Know that adding H2 means we are adding two hydrogen atoms to the alkene.
Step 3: Recognize that the addition of H2 happens in a specific way called 'syn addition'.
Step 4: In syn addition, both hydrogen atoms attach to the same side of the double bond.
Step 5: This results in a new molecule where the double bond is replaced by a single bond, and both hydrogens are on the same side.

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