Question

Which is the correct order of acid strength from the following? 

• A. C_6H_5OH > H_2O > ROH
• B. C_6H_5OH > ROH > H_2O
• C. ROH > C_6H_5OH > H_2O
• D. H_2O > C_6H_5OH > ROH
  \vspace{5pt}

Hint:

The acidity of alcohols, phenols, and water is governed by their ability to stabilize the negative charge after deprotonation.

Answer 1

The Correct Option is A

Step 1: Understanding acidity. The acid strength depends on the ability to donate a proton. Alcohols and phenols are weaker acids than water, and phenols are generally stronger acids than alcohols. 

Step 2: Conclusion. Thus, the correct order of acid strength is H_2O>C_6H_5OH>ROH, corresponding to option (D). \vspace{10pt}