Question

which of the following is the correct lewis dot structure for a molecule with the formula ch3co2h? remember, hydrogens only need two valence electrons for a full outer shell and are always on the outside, or termini, of a lewis structure.

Explanation:

Step1: Analyze the structure of acetic acid

Acetic acid ($CH_3CO_2H$) has a methyl group ($CH_3$) attached to a carboxyl group ($COOH$). Hydrogen atoms are on the outside.

Step2: Check for correct bonding and electron - distribution

In the correct Lewis - dot structure, the carbon - carbon bond is single, the carbon - oxygen double bond in the carboxyl group has two lone pairs on the double - bonded oxygen, and the other oxygen has two lone pairs and is bonded to a hydrogen.

Answer:

The first option (the structure with the correct connectivity of $H - C(CH_3)-C(=O)-O - H$ and proper lone - pair distribution on oxygen atoms) is the correct Lewis - dot structure for $CH_3CO_2H$.