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Turning 'red wine' into 'water'

Description

A solution of acidified potassium permanganate (‘red wine’) is poured into a set of glasses previously laced with small amounts of colourless solutions. The ‘wine’ turns to ‘water’, ‘milk’, ‘raspberry milk shake’ and ‘fizzy lemonade’.

Type of Activity

:
demonstration

Audience

:
Teacher

Age Group

:
11 to 18 years

Credits

:
This is an experiment from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry.
turning-red-wine-into-wat...



Apparatus Chemicals

For each demonstration:

Eye protection to be worn

Wine or fruit juice bottle (750 cm3 or larger)

Wine glasses (or similar), 5 (Note 1)

Beakers or conical flasks (250 cm3)

Beaker or conical flask (1 dm3)

Measuring cylinders (10 cm3)

Potassium permanganate(VII) (OXIDISING, HARMFUL), 0.4 g

Barium chloride dihydrate (TOXIC), 24 g

Sodium thiosulfate-5-water, 25 g

Sodium carbonate (anhydrous) (IRRITANT), 22 g

Dilute sulfuric acid, 2 M (CORROSIVE), 100 cm3

Deionised or distilled water, 1.5 dm3

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

 












A solution of acidified potassium permanganate (‘red wine’) is poured into a set of glasses previously laced with small amounts of colourless solutions. The ‘wine’ turns to ‘water’, ‘milk’, ‘raspberry milk shake’ and ‘fizzy lemonade’.

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 .