What is the color of the indicator thymol blue in a solution that has a pH of 11?
A. red
B. pink
C. blue
D. yellow
Answer (3)
The answer would be blue . This is because red indicates 1-2, pink is 3, and yellow is 6.
Answer is (2) - blue.
Thymol blue is a pH indicator which 3 colors according to the pH.
Thymol blue shows red color at below pH than 1.2 and shows yellow color at the pH between 2.8 and 8.0. For the pH above 9.6, thymol blue shows blue color .
Hence, the thymol blue has 2 pH ranges as 1.2 - 2.8 and **8.0 - 9.6. **
Since, pH = 11 is above the pH = 9.6, thymol blue shows blue color.
In a solution with a pH of 11, thymol blue will appear blue . This is because thymol blue turns blue at pH levels above 9.6. Therefore, the correct answer is option C: blue.
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