Acids turn methyl orange pink/red.
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.