The colour of phenolphthalein indicator in alkaline solut...
The colour of phenolphthalein indicator in alkaline solution at the end-point of an acid-base titration is?
colourless
orange
pink
yellow
Correct answer is C
Phenolphthalein is one of the most commonly-used indicators in neutralisation titration.
Phenolphthalein is naturally colorless but turns pink in alkaline solutions.
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