When does phenolphthalein turn pink?      when the concentration of H+ ions is very low in the solution

General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter15: Acids And Bases
Section: Chapter Questions
Problem 15.82QP: A drop of thymol blue gave a yellow color with a solution of aspirin. A sample of the same aspirin...
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  1. When does phenolphthalein turn pink? 

       

    when the concentration of H+ ions is very low in the solution 

       

    when the concentration of H+ ions is very high in the solution 

       

    when there is equal concentrations of H+ and OH- ions in the solution

 

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