Analytical Chemistry Question 253
Question: The pink colour of phenolphthalein in alkaline medium is
[CPMT 1990]
Options:
A) Due to negative form of the ion
B) Due to positive reinforcement
C) Due to $ OH^{-} $ ions
D) Due to neutral form
Show Answer
Answer:
Correct Answer: D
Solution:
Here KMnO4 itself acts as an indicator.
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