Phenolphthalein is a synthetic indicator. Its colour in the acidic and basic solutions, respectively are
a. Red and blue
b. Blue and red
c. Pink and colourless
d. Colourless and pink
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Answer:
colourless and pink. mark me brainlest answer
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Explanation:
d) pink and colourless
Phenolphthalein [3,3-Bis (4- hydroxyphenyl)- 2 benzofuran- 1-one] is often used as an indicator in acid-base titrations. It turns colourless in acidic solutions and pink in basic solutions.
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