what is ph paper
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pH paper is a universal indicator which is used to identify the concentration of OH- or hydroxide ions concentration or H3O or H+ (aq)ion concentration in a solution. Also this results in the identification of the nature of a solution as well as the strength of a solution in according acidity /alkilanity...
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A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH of the solution can be determined visually. Hence, a pH indicator is a chemical detector for hydronium ions or hydrogen ions in the Arrhenius model..
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