Q13 / 54 · NTA Abhyas (JEE Main) 2020 · Chemistry · Redox Reactions

The colour change of an indicator HIn in acid base titrations is given below
Figure
Which of the following statement is correct?

  • Correct answer
    A
    In a strong alkaline solution colour Y will be observed
  • B
    In a strong acidic solution colour Y will be observed
  • C
    Concentration of In- is higher than that of HIn at the equivalence point
  • D
    In a strong alkaline solution colour X is observed

Solution

It is an acidic indicator therefore will remain in ionized form in strong alkaline solution (opposite ion effect) so it will show the colour due to Inaq- which is colour Y.

Hence, the correct answer is option: 'A'.

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