Answer:
One oxygen atom is tetrahedral while the other is trigonal planar
Explanation:
Acetic acid contains two oxygen atoms. The two oxygen atoms are different and have different geometries.
The first oxygen atom which is part of the carbonyl moiety in the molecule is in a trigonal planar geometry since it is sp2 hybridized.
The second oxygen atom is in sp3 hybridized state hence it is tetrahedral.
Thus one oxygen atom is tetrahedral and the other is trigonal planar in acetic acid.
