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Phenol versus ethanol acidity: pKa values and statements

This type of question, asked 3 times: 29 Jun 2022, 29 Jan 2024, 31 Jan 2024. All 3 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    29 Jun 2022

    50
    Given below are two statements. Statement I: Phenols are weakly acidic. Statement II: Therefore, they are freely soluble in NaOHNaOH solution and are weaker acids than alcohols and water. Choose the most appropriate option:

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  2. Question 2

    29 Jan 2024

    123
    Match List I with List II
    List I (Compound)List II (pKapK_{a} value)
    A.EthanolI.10.0
    B.PhenolII.15.9
    C.m-NitrophenolIII.7.1
    D.p-NitrophenolIV.8.3
    Choose the correct answer from the options given below: -

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  3. Question 3

    31 Jan 2024

    44
    Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: pKapK_{a} value of phenol is 10.0 while that of ethanol is 15.9. Reason R: Ethanol is stronger acid than phenol. In the light of the above statements, choose the correct answer from the options given below:

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