Problem: The titration shown here has an equivalence point at pH = 3.2. Identify which of the following indicators would be appropriate for this titration. Check all that apply.a. metacresol purple  pKa = 1.51, 8.32b. ethyl red  pKa = 5.42c. quinaldine red  pKa = 2.63d. bromothymol blue  pKa = 7.0 e. phenolphthalein  pKa = 9.50f. thymol blue  pKa = 1.65, 9.20

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FREE Expert Solution
  • If we will analyze the graph and the given info, we can see that  equivalence point is at 3.2

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Problem Details

The titration shown here has an equivalence point at pH = 3.2. Identify which of the following indicators would be appropriate for this titration. Check all that apply.

a. metacresol purple  pKa = 1.51, 8.32

b. ethyl red  pKa = 5.42

c. quinaldine red  pKa = 2.63

d. bromothymol blue  pKa = 7.0 

e. phenolphthalein  pKa = 9.50

f. thymol blue  pKa = 1.65, 9.20

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