JEE Mains · Chemistry · STD 11 - 6.2. Equilibrium - II (icon Equilibrium)
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 \(\mathrm{NaOH}\) phenolphthalein is not a suitable indicator. In the light of the above statements, choose the most appropriate answer from the options given below:
- A Statement \(I\) is false but Statement \(II\) is true
- B Statement \(I\) is true but Statement \(II\) is false
- C Both Statement \(I\) and Statement \(II\) are true
- D Both Statement \(I\) and Statement \(II\) are false
Answer & Solution
Correct Answer
(B) Statement \(I\) is true but Statement \(II\) is false
Step-by-step Solution
Detailed explanation
Titration curve for strong acid and weak base initially a buffer of weak base and conjugate acid is: Formed, thus \(\mathrm{pH}\) falls slowly and after equivalence point, so the \(\mathrm{pH}\) falls sharply so methyl arrange, having \(\mathrm{pH}\) range of \(3.2\) to \(4.4\)…
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