Addition of phenolphthalein to an unknown colorless solution does not cause a color change. The addition of bromthymol blue to the same solution leads
Chapter 16, Problem 16.40(choose chapter or problem)
Addition of phenolphthalein to an unknown colorless solution does not cause a color change. The addition of bromthymol blue to the same solution leads to a yellow color.
(a) Is the solution acidic, neutral, or basic?
(b) Which of the following can you establish about the solution:
(i) A minimum pH,
(ii) A maximum pH, or
(iii) A specific range of pH values?
(c) What other indicator or indicators would you want to use to determine the pH of the solution more precisely?
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