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Phenol red is a pH indicator. The baking soda is not changing color, but the phenol red is.

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Phenol red is a pH indicator. The baking soda is not changing color, but the phenol red is.

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Phenol red is a weak acid.

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A solution of phenol red is a liquid.

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no

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Phenol red is made by condensation of Phenol and saccharine.

  • pH below 6.8 = Yellow
  • pH above 8.2 = Red/Fuschia
  • Gradually turns from yellow to red/fuschia (pH between 6.8 and 8.2 = Pinkish)
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