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bmelyk Group Title

what ion must be responsible for the observed pH of FeCl3?

  • 2 years ago
  • 2 years ago

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  1. dx13 Group Title
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    Fe because hcl is a strong acid so Cl- is not a conjugate base and Fe is a conjugate acid slightly lowering the pH

    • 2 years ago
  2. DareDevil Group Title
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    For the aq layer, Fe(OH)3. A product of H2O and the excess FeCl3. For the Persian blue layer, KCl + Fe4[Fe(CN)6]3. Product of potassium ferrocyanide + ferric chloride. For the acidic layer (white), FeCl3. For the basic layer (pink), NaOH. The phenolphthalene is a pH indicator. Since it turned pink, then it's basic.

    • 2 years ago
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