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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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The anthocyanin in hydrangeas can be isolated and used as an environmentally friendly pH indicator for titrations. At the end of a titration reaction of a strong acid with a strong base, you have a neutral solution.
Which of the following lab experiments would work to test your color prediction above? ( can select more than one answer)
- Include anthrocyanins in a titration, as they will always change between pink and blue at the equivalence point.
- Titrating isolated anthrocyanins with base.
- Adding isolated anthrocyanins to neutral water and checking the pH.
- Include known concentrations of isolated anthrocyanins in a strong
acid/strong base titration.
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