さんえんきしじやく
酸塩基指示薬
1. acid-base indicator
2. PH indicatorA pH indicator is a halochromic chemical compound that is added in small amounts to a solution so that the pH of the solution can be determined visually. Hence a pH indicator is a chemical detector for hydronium ions (H3O) or hydrogen ions (H) in the Arrhenius model. Normally, the indicator causes the colour of the solution to change depending on the pH. At 25 °C, considered the standard temperature, the pH value of a neutral solution is 7.0.
Read “PH indicator” on English Wikipedia
Read “酸塩基指示薬” on Japanese Wikipedia
Read “PH indicator” on DBpedia
Read “PH indicator” on English Wikipedia
Read “酸塩基指示薬” on Japanese Wikipedia
Read “PH indicator” on DBpedia
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