check the action of these solutions on litmus and find the
pH using a pH paper
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Litmus and pH paper contain a chemical that changes color as it makes contact with an acid or base. The paper will turn red in acids and blue in bases. Usually a color chart is provided with the pH paper in order for the user to determine the pH range of the indicator. Using paper to determine the pH is not as accurate as a pH meter, which provides results with the exact pH measurement; whereas the pH paper only results in a pH range.
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