Question

what is phenopthelene? How it can be used.​

Answer 1

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• Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions. It belongs to the class of dyes known as phthalein dyes. ... It is a weak acid, which can lose H+ ions in solution.

• Chemical formula: C20H14O4

• Solubility in other solvents: Insoluble in benzene and hexane; very soluble in ethanol ...

• GHS precautionary statements: P201, P281, P308+313

• Solubility in water: 400 mg/L

Answer 2

Explanation:

Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions. It belongs to the class of dyes known as phthalein dyes.

. It is a weak acid, which can lose H+ ions in solution.

• Chemical formula: C20H14O4

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