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Well, to indicate whether a liquid is an acid or a base, you can buy litmus paper. Litmus paper changes color when it is placed in a liquid that isn't water. The color it changes to indicates where it is on the pH scale. If on the pH scale, the liquid is from 1-7 it is a acid. If it is 8- 14, it's a base. To find which color corresponds to which number on the pH scale, just look it up online.

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14y ago

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