Turmeric as an Indicator

Last updated at August 14, 2026 by

How does turmeric act as an Acid-Base Indicator?

 

Answer

  • Indicators help us to identify if a substance is an acid or base .
  • Turmeric is yellow in colour naturally .
  • It changes colour when in a basic substance to red.
  • So turmeric in ,
    • Acid → Yellow
    • Neutral → Yellow
    • Base → Red
  • This way turmeric can be used as an indicator.
  • Example, 
    • In Hydrochloric Acid (HCl), turmeric remains yellow
    • In Sodium Hydroxide (NaOH), turmeric turns red

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