Question

VSEPR geometry predicts that bond angles in formaldehyde, a trigonal planar molecule, will be 120° throughout all three angles. However, analysis showed that the H-C-H bond angle is slightly smaller at 116.5°, while the two H-C-O angles are slightly larger at 121.8°. Explain this difference in predicted bond angle vs actual bond angle.

Name: vsepr geometry predicts that bond angles in formaldehyde a trigonal planar molecule will be 120 throughout all three angles however analysis showed that h ch bond anle is slightly smaller at 32132
Uploaded: 2022-09-15T22:25:09-08:00
Duration: 2 min 30 s
Channel: Henry He
Description: vsepr geometry predicts that bond angles in formaldehyde a trigonal planar molecule will be 120 throughout all three angles however analysis showed that h ch bond anle is slightly smaller at 32132

          VSEPR geometry predicts that bond angles in formaldehyde, a trigonal planar molecule, will be 120° throughout all three angles. However, analysis showed that the H-C-H bond angle is slightly smaller at 116.5°, while the two H-C-O angles are slightly larger at 121.8°. Explain this difference in predicted bond angle vs actual bond angle.

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Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

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Solved by Expert Henry He

09/15/2022

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Step 1: VSEPR theory predicts that the bond angles in formaldehyde should be 120° due to its trigonal planar geometry. Show more…

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VSEPR geometry predicts that bond angles in formaldehyde, a trigonal planar molecule, will be 120° throughout all three angles. However, analysis showed that the H-C-H bond angle is slightly smaller at 116.5°, while the two H-C-O angles are slightly larger at 121.8°. Explain this difference in predicted bond angle vs actual bond angle.