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ninilizovtskt
23.07.2019 •
Chemistry
Why is phenolphthalein an appropriate indicator for titration of a strong acid with a strong base?
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Ответ:
pH will rapidly change near titration equivalence point. Only one drop of the titrant causes this large change, the color change of phenolphthalein does not occur on the equivalence point, but IT IS within about 1 drop. It would be considered an "acceptable uncertainty" in using titration to determine concentration by volumetric measurement.
Ответ:
TON 618
Explanation: