📖 Theory & Concepts

Indicators & Color Changes

IndicatorIn AcidIn NeutralIn Base
Blue LitmusRedBlueBlue
Red LitmusRedRedBlue
Methyl OrangeRed/PinkOrangeYellow
PhenolphthaleinColorlessColorlessPink

Common Acids & Bases

  • Acids: HCl, H₂SO₄, Vinegar (CH₃COOH), Lemon juice
  • Bases: NaOH, Ca(OH)₂, Baking soda (NaHCO₃), Soap
  • Neutral: Water, NaCl solution

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Lab Journal
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Observation Table