Coloring of phenolphthalein in ammonia solution.
| May 7, 2021 | education
Raspberry color is a sign of an alkaline solution.
It is known that an amic solution is a K3PO4 salt formed by a relatively weak acid H3PO4 and a strong base KOH, which makes it an alkaline medium. As a result, phenolphthalein getting into the amic solution will acquire a raspberry color.
It should be noted that all other salts have a strong base and a strong acid. Therefore, phenolphthalein, getting into solutions of these salts, remains colorless.
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