NEET
- Exam
- NEET
- Subject
- Chemistry
- Chapter
- Redox Reactions
NEET · Chemistry · Redox Reactions
Given below are two statements: one is labelled as Assertion A and...
Given below are two statements: one is labelled as Assertion and the other is labelled as Reason .
Assertion :Phenolphthalein is a dependent indicator, remains colourless in acidic solution and gives pink colour in basic medium
Reason : Phenolphthalein is a weak acid. It doesn't dissociate in basic medium.
In the light of the above statements, choose the most appropriate answer from the options given below
Options
- ABoth and are true and is the correct explanation of
- BBoth and are true but is NOT the correct explanation of .
- C is true but is false
- D is false but is true
Correct answer
C. is true but is false
Step-by-step solution
Phenolphthalein, , an organic compound of the phthalein family that is widely employed as an acid-base indicator. As an indicator of a solution’s pH, phenolphthalein is colourless below pH and attains a pink to deep red hue above pH .
Phenolphthalein dissociate in basic medium