The indicator thymol blue changes from red to yellow between pH 1.2 and pH 2.8. If thymol blue is added to a solution, and the solution turns yellow, then     the pH of the solution must be above 2.8, and the solution is acidic.     the solution is acidic, and the pH must be at or below 1.2.     the solution is basic, and the pH must be at or below 1.2.     the pH of the solution must be above 2.8, and the solution is basic.     the pH of the solution is above 2.8, and the solution could be acidic, neutral or basic.

Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter16: Reactions Between Acids And Bases
Section: Chapter Questions
Problem 16.87QE
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  1. The indicator thymol blue changes from red to yellow between pH 1.2 and pH 2.8. If thymol blue is added to a solution, and the solution turns yellow, then

       

    the pH of the solution must be above 2.8, and the solution is acidic.

       

    the solution is acidic, and the pH must be at or below 1.2.

       

    the solution is basic, and the pH must be at or below 1.2.

       

    the pH of the solution must be above 2.8, and the solution is basic.

       

    the pH of the solution is above 2.8, and the solution could be acidic, neutral or basic.

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