What is the approximate C-O-H bond angle in CH3OH?Group of answer choices180°120°109.5°90°60°

1. Break Down the Problem

To determine the approximate C-O-H bond angle in methanol (CH₃OH), we need to analyze the molecular structure and geometry of the molecule.

2. Relevant Concepts

Methanol (CH₃OH) has a carbon atom (C) bonded to three hydrogen atoms (H) and one hydroxyl group (OH). The shape around the carbon atom and the oxygen atom will influence the bond angles. The key concept here is the tetrahedral arrangement due to the four regions of electron density around the carbon atom.

3. Analysis and Detail

In methanol:

• The carbon atom (C) is sp³ hybridized because it has four substituents (3 hydrogens and 1 hydroxyl group), leading to a tetrahedral shape.
• The typical bond angle in a perfect tetrahedral structure is approximately 109.5°.
• The presence of the lone pair on the oxygen atom in the hydroxyl group may slightly distort the bond angles, but they will still be close to the tetrahedral arrangement.

4. Verify and Summarize

Thus, the predominant bond angle around the carbon (C) in methanol is approximately 109.5° due to the tetrahedral shape formed by sp³ hybridization.

Final Answer

The approximate C-O-H bond angle in CH₃OH is 109.5°.