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Red, white and blue!

Description

A solution of ammonia is turned red, white or blue by adding it to phenolphthalein, lead nitrate and copper(II) sulfate solution.

Credits

:
This is an experiment from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry.
red-white-and-blue



Apparatus Chemicals

For each demonstration:

Eye protection: goggles

Diposable gloves (preferably nitrile)

Beakers (250 cm3), 3

Conical flasks (500 cm3), 2

Beaker (100 cm3)

Dropping pipettes, 3

Ammonia solution, 1 M, 250 cm3

Dilute nitric acid, 2 M (CORROSIVE), 250 cm3

Copper(II) sulfate solution, 0.5 M, 1 cm3

Lead(II) nitrate solution, saturated (TOXIC, DANGEROUS FOR THE ENVIRONMENT),
1 cm3

Phenolphthalein solution (HIGHLY FLAMMABLE)

Deionised or distilled water

Refer to Health & Safety and Technical notes section below for additional information.

 


Read our standard health & safety guidance





2016



A solution of ammonia is turned red, white or blue by adding it to phenolphthalein, lead nitrate and copper(II) sulfate solution.

ADDITIONAL INFORMATION

This is a resource from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry. This collection of over 200 practical activities demonstrates a wide range of chemical concepts and processes. Each activity contains comprehensive information for teachers and technicians, including full technical notes and step-by-step procedures. Practical Chemistry activities accompany Practical Physics and Practical Biology.