객관식
Which of the following is the best Lewis structure for (dichloromethane)?
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1. A Review of General Chemistry
Lewis Structure
객관식
Which of the following best represents the correct Lewis structure for (acetic acid)?
A
A central carbon atom double bonded to one oxygen atom, single bonded to another oxygen atom (which is also bonded to a hydrogen), and single bonded to a methyl group ()
B
Two carbon atoms connected by a triple bond, each bonded to two hydrogens and one oxygen atom
C
A ring structure with alternating single and double bonds between carbon and oxygen atoms
D
A linear chain of two carbon atoms, each bonded to two hydrogens and one oxygen atom, with no double bonds
검증된 단계별 안내1
Identify the molecular formula given: \(\mathrm{C_2H_4O_2}\), which corresponds to acetic acid, a common carboxylic acid.
Recall the functional groups present in acetic acid: it contains a carboxyl group (\(-COOH\)) attached to a methyl group (\(-CH_3\)).
Start constructing the Lewis structure by placing the central carbon atom (the carboxyl carbon) bonded to two oxygen atoms: one with a double bond (carbonyl oxygen) and one with a single bond (hydroxyl oxygen).
Attach a hydrogen atom to the hydroxyl oxygen to complete the \(-COOH\) group, and then connect the central carbon to a methyl group (\(CH_3\)), which consists of a carbon bonded to three hydrogens.
Verify that all atoms satisfy the octet rule (except hydrogen, which follows the duet rule) and that the total number of atoms and bonds matches the molecular formula \(\mathrm{C_2H_4O_2}\).
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