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Phenols

Mediumchemistry

Arrange the following in decreasing order of acidic strength: phenol, water, ethanol.

Select the correct option:

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About This Question

Subject
chemistry
Chapter
organic compounds containing oxygen
Topic
phenols
Difficulty
Medium
Year
2025
Tags
Acidity OrderResonancePhenoxide Stability

Solution

Correct Answer:

Phenol is more acidic than water and ethanol because the phenoxide ion is resonance-stabilized. Water is more acidic than ethanol because the +I effect of the ethyl group in ethanol destabilizes the ethoxide ion. Therefore the correct order is phenol > water > ethanol.

This medium difficulty chemistry question is from the chapter organic compounds containing oxygen, covering the topic of phenols. It appeared in the 2025 exam.

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