Ascorbic Acid Reaction in Laboratory Flask - Science Education Visual #3494 (License: Personal Use)

This educational illustration shows ascorbic acid (vitamin C) being introduced into a blue aqueous solution inside an Erlenmeyer flask, producing visible bubbles indicating gas evolution or dissolution. The cork stopper and curved arrow emphasize controlled addition, commonly used to depict titration, antioxidant activity, or pH-dependent reactions in introductory chemistry.

Used in science education websites, chemistry textbooks, lab procedure guides, and health/nutrition articles explaining vitamin C’s chemical behavior; matches user intent for visual learning, classroom instruction, or科普 content.