Which option correctly describes a model of methanol, CH3OH

Answer 1

A model of methanol (CH3OH) can be described in several ways, depending on the context in which it is being discussed (e.g., structural, molecular, or ball-and-stick model). Here’s one way to describe it:

1. Structural Formula: Methanol consists of one carbon (C) atom, which is bonded to three hydrogen (H) atoms and one hydroxyl group (–OH). The structural formula can be represented as:

         H
         |
      H—C—O—H
         |
         H
   

   Here, the central carbon atom is sp³ hybridized, forming single bonds with three hydrogen atoms and one oxygen atom.

2. Ball-and-Stick Model: In a ball-and-stick model, the carbon atom is typically represented as a black or grey sphere, the oxygen atom as a red sphere, and the hydrogen atoms as white spheres. The sticks represent the bonds between the atoms.

3. Molecular Geometry: The geometry around the carbon atom is tetrahedral due to the four groups around it (three hydrogens and one hydroxyl). The presence of the oxygen atom introduces some polarity due to the difference in electronegativity.

4. Polarity: Methanol is a polar molecule due to the electronegativity difference between carbon and oxygen, which affects its physical properties and its ability to form hydrogen bonds.

In summary, a correct model of methanol identifies its molecular composition (one carbon, three hydrogens, and one oxygen), its structural arrangement, and its polar characteristics.