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Choice of indicator for an acid-base titration

This type of question, asked 3 times: 2021 Paper 18, 29 Jul 2022, 31 Jan 2023. All 3 questions below, oldest first.

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  1. Question 1

    2021 Paper 18

    41
    Given below are two statements. Statement I: In the titration between strong acid and weak base methyl orange is suitable as an indicator. Statement II: For titration of acetic acid with NaOHNaOH phenolphthalein is not a suitable indicator. In the light of the above statements, choose the most appropriate answer from the options given below:

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  2. Question 2

    29 Jul 2022

    140
    A compound ' XX ' is a weak acid and it exhibits colour change at pHpH close to the equivalence point during neutralization of NaOHNaOH with CH3COOHCH_{3}COOH. Compound ' XX ' exists in ionized form in basic medium. The compound ' XX ' is:

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  3. Question 3

    31 Jan 2023

    132
    Incorrect statement for the use of indicators in acid-base titration is:

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