JEE Main 202229 JulyEvening Shift
- Exam
- JEE Main
- Year
- 2022
- Date
- 29 July
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- Redox Reactions
JEE Main 2022 · 29 July · Evening Shift · Chemistry · Redox Reactions
A compound ' X ' is a weak acid and it exhibits colour change at pH...
A compound '' is a weak acid and it exhibits colour change at close to the equivalence point during neutralization of with . Compound '' exists in ionized form in basic medium. The compound '' is
Options
- Amethyl orange
- Bmethyl red
- Cphenolphthalein
- Derichrome Black
Correct answer
C. phenolphthalein
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 8.5 and attains a pink to deep red hue above pH 9.0.
It is used for the titration of weak acid and strong base. Phenolphthalein is weak acid give colour in basic medium. It exist in ionized form in basic medium.