When will acids change colour to methyl orange?


Acids turn methyl orange pink/red.

Methyl orange

Methyl orange is a natural pH indicator used in titration or used to test whether a substance/a solution is acidic or basic in nature.

  • It is orange. The indicator changes its colour depending on the pH of the solution.
  • At pH values less than 3.1, methyl orange is red and a pH values greater than 4.4, it will be yellow.
  • In aqueous solution the indicator should be bright yellow at pH > 4.
  • Colour in acidic solution is red
  • The colour in basic solution is yellow.

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