Phenolphthalein a single indicator

Phenolphthalein a single indicator

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This image is part of the sequence Sciecne and technology: Phenolphthalein indicator


Caption: Phenolphthalein is used as a single indicator in acid-base titrations. At left it is shown in a base solution and is a pink colour. Adding a dilute acid turns it gradually colourless. At pH 9.3 (ight) the colour is barely perceivable and by pH 8 it is colourless.

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Keywords: acid, acid-base, acid-base titrations, chemical, chemistry, color dilute acid, colour, conical flasks, experiment, fuchsia, hydrogen ion concentration, indicator, no-one, nobody, ph, ph 9.3, phenolphthalein, pink, school science, science education, single indicator, solution, titrations, white background

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