Published by:
CGP EDU Academic Team
Published on: August 23, 2026
The titration curve of weak acid vs. strong base with phenolphthalein as indictor) is shown below. The 
. Given: 
The number of following statements which is/are correct about phenolphthalein is___
A
It can be used as an indicator for the titration of weak acid with weak base.
B
It begins to change colour at 
C
It is a weak organic base
D
It is colourless in acidic medium
Text Solution
Verified by ExpertsThe correct answer is:
2
(2)
Indicator range
i.e. 8.4 to 10.4
In acidic medium, phenolphthalein is in unionized form and is colourless.
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