Multiple Choice
During an extraction procedure, what issue would occur if NaCl and a drying agent were not sequentially added to the ether layer?
4. BONUS: Lab Techniques and Procedures
Extraction
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In a typical extraction experiment to isolate benzoic acid from a mixture, which of the following represents the structure of benzoic acid?
A
C6H5COOH
B
C6H5OH
C
C6H6
D
C6H5NH2
Verified step by step guidance1
Step 1: Understand the functional groups in the given compounds. Benzoic acid contains a carboxylic acid group (-COOH) attached to a benzene ring, which is represented as C6H5COOH.
Step 2: Recognize that C6H5OH represents phenol, which has a hydroxyl group (-OH) attached to the benzene ring, not a carboxylic acid.
Step 3: Identify that C6H6 is benzene, a simple aromatic hydrocarbon with no functional groups attached.
Step 4: Note that C6H5NH2 is aniline, which has an amino group (-NH2) attached to the benzene ring, different from the carboxylic acid group.
Step 5: Conclude that the structure representing benzoic acid is C6H5COOH because it contains the benzene ring with the carboxylic acid functional group necessary for the extraction experiment.
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