QQuestionChemistry
QuestionChemistry
Keeping the VSEPR model in mind, complete the following tasks:
Draw the Lewis Structures for ethanol (C
2
H
5
OH) and dimethyl ether (CH
3
OCH
3
).
Determine the electron pair geometry and molecular geometry around the oxygen atom in each molecule.
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Answer
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Step 1:I'll solve this problem step by step, following the specified LaTeX formatting guidelines:
Step 2:: Draw Lewis Structure for Ethanol (\mathrm{C}_{2}\mathrm{H}_{5}\mathrm{OH})
* Total: $$20$$ valence electrons
- Count total valence electrons: - Arrange atoms: Connect carbons with single bond, attach hydrogens and hydroxyl group - Distribute electrons to satisfy octet rule - Lewis structure shows single bonds between atoms and lone pairs on oxygen
Step 3:: Draw Lewis Structure for Dimethyl Ether (\mathrm{CH}_{3}\mathrm{OCH}_{3})
* Total: $$20$$ valence electrons
- Count total valence electrons: - Connect carbons to oxygen with single bonds - Distribute remaining electrons as lone pairs
Step 4:: Electron Pair Geometry for Oxygen in Ethanol
- Bond angle approximately $$104.5°
- Oxygen has 2 bonding pairs and 2 lone pairs - Electron pair geometry: Tetrahedral - Molecular geometry: Bent
Step 5:: Electron Pair Geometry for Oxygen in Dimethyl Ether
- Bond angle approximately $$104.5°
- Oxygen has 2 bonding pairs and 2 lone pairs - Electron pair geometry: Tetrahedral - Molecular geometry: Bent
Final Answer
1. Ethanol (\mathrm{C}_{2}\mathrm{H}_{5}\mathrm{OH}): - Electron pair geometry: Tetrahedral - Molecular geometry: Bent 2. Dimethyl Ether (\mathrm{CH}_{3}\mathrm{OCH}_{3}): - Electron pair geometry: Tetrahedral - Molecular geometry: Bent Note: Detailed Lewis structure drawings would typically accompany this explanation, showing specific electron placement and bonding.
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