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Red Cabbage

Blending the cabbage

Straining the cabbage

Pipetting the Juice

Baking Soda

Detergents

Acetic Acid

Vinegar

What Happened?

Red Cabbage
Red cabbage is not always red! The color of red cabbage varies with pH, as shown by the following table.

pH 2 4 6 8 10 12
cabbage color red purple violet blue blue-green green

Below is a picture of the red cabbage used for this experiment.

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Department to Bioengineering University of Washington