Thymol blue is a unique indicator that has two set of color change, red to yellow near pH = 1.5 and yellow to blue near pH = 9.00. If a HCl-NaOH titration set-up used thymol blue as an indicator, what would be the color of the solution where the titrant and titrand are equimolar with each other? a. red b. orange c. yellow d. blue

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Thymol blue is a unique indicator that has two set of color change, red to yellow near pH = 1.5 and
yellow to blue near pH = 9.00. If a HCl-NaOH titration set-up used thymol blue as an indicator, what
would be the color of the solution where the titrant and titrand are equimolar with each other?
a. red
b. orange
c. yellow
d. blue

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