Answer to Question #287653 in Organic Chemistry for adrian

Question #287653

B: Lewis structures and molecular shape

1. Determine the Lewis structure of trichloromethane/formaldehyde/methanol.


O Formaldehyde

 Z Methanol

2. Predict its molecular shape: you must include a sketch along with bond angles.

3. construct a model of the molecule. Take a snapshot of your model and insert it into

the space provided.

4. Show bond polarities and state whether the molecule is a polar molecule.

Expert's answer

1. Trichloromethane ( CHCl3 )

- contains one hydrogen,one carbon and three chlorine atom.

- it is a polar molecule.

- has a bond angle of 109.5 degrees.

- molecular shape is tetrahedral.

2. Formaldehyde ( CH2O )

- made of two hydrogen,one carbon and one oxygen.

- it is polar molecule.

- it's shape is trigonal planar.

- it's bond angle is 120 degrees.

3. Methanol ( CH3OH )

- Has one O-H bond,three C-H bonds and one C-O bond.

- Molecular shape is tetrahedral.

- it is polar.

- it's bond angle is 109.5 degrees.

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