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Fundamental Principles of Organic Chemistry Relative Acidity of Organic Compounds

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Which order correctly represents decreasing acid strength?

Verified Answer & Explanation⌄

Correct Answer: A) RCOOH > H₂O > ROH > HC≡CH

Concept Explanation

Typical pKa values are about 4–5 for carboxylic acids, 15.7 for water, about 16–18 for alcohols and about 25 for terminal alkynes; lower pKa means stronger acid.

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