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Acid-base titration

Acid-base titration

A500/0185

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Credit

JERRY MASON / SCIENCE PHOTO LIBRARY JERRY MASON / SCIENCE PHOTO LIBRARY

Caption

Acid-base titration. Demonstration of an acid-base titration using the indicator phenolphthalein. An alkaline solution is in the flask, with a few drops of the indicator added to give a purple colour. Acid is slowly added from the burette above. When the acid has completely neutralised the alkali in the solution, the indicator turns colourless. This technique is used to gather data for many investigations, such as determining the concentration of the acid or alkali.

Release details

Model release not required. Property release not required.

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