Question

The pink colour of phenolphthalein in alkaline medium is due to

• A. The acidic form of phenolphthalein
• B. The anionic form of phenolphthalein
• C. OH^– of the alkali
• D. The non conjugated structure of phenolphthalein

Answer 1

Answer: (B)

The anionic form of phenolphthalein

Answer 2