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Phenolphthalein Indicator

Phenolphthalein Indicator

C039/1215

Rights Managed

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Credit

TURTLE ROCK SCIENTIFIC / SCIENCE PHOTO LIBRARY TURTLE ROCK SCIENTIFIC / SCIENCE PHOTO LIBRARY

Restrictions:

Editorial use only.

Caption

Phenolphthalein indicator. Phenolphthalein indicator changes its colour depending on the pH of the solution, it turns colourless in acidic solutions and pink/fuchsia in basic solutions. Here phenolphthalein solution (centre) is added to beakers with an acidic solution (left, 0.1 M sulfuric acid, H2SO4) and an alkaline solution (right, 0.1 M potassium hydroxide, KOH).

Release details

Model release not required. Property release not available.

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