How To: Create an acid-base indicator using purple cabbage

Create an acid-base indicator using purple cabbage

Purple cabbage is a natural indicator and this video teaches you how to easily prepare purple cabbage in the comfort of your own home to be used as an acid and base indicator. Take one leaf of your purple cabbage, tear it into smaller pieces and place all the pieces into a beaker or bowl of boiling water for an hour. Collect the liquid from your mixture into a bottle. You’ll notice that the liquid is now dark blue or purple at which point is neutral. It is ready to be used as an indicator. You can test the solution on different items in your home to see how basic or how acidic things are. Keep in mind that the more acidic something is, the redder the color will be and the more basic something is, the more yellow the color.

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