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13 November, 19:50

An unknown solution changed the color of a phenolphthalein indicator from colorless to pink. What would you comment about the pH of the unknown solution? A. The given solution is acidic in nature. B. The given solution is basic in nature. C. The given solution is neutral in nature.

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  1. 13 November, 23:16
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    I think the correct answer from the choices listed above is option B. An unknown solution changed the color of a phenolphthalein indicator from colorless to pink. The given solution would be basic in nature. Phenolphthalein indicator is commonly used in acid-base titrations where it changes from colorless when acidic to pink when basic.
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