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Dip the litmus paper into the solution you are testing. Hold it up in the air, holding the dry bit. Look at the bit you dipped.

If the solution was an acid, red litmus will stay red, blue litmus will turn red.

If the solution was an alkali, red litmus will turn blue, blue litmus will stay red.

If the solution was neutral, red litmus will stay red, blue litmus will stay blue.

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13y ago

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