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Colours of indicators in neutral, acidic and basic medium.

Indicators Colour in neutral Colour in acidic Colour in basic
medium medium medium

Turmeric Yellow Yellow Red
solution

Red cabbage Purple Red Green

extract

China rose Pink Magenta Green

extract

Red litmus Red Red Blue

Blue litmus Blue Blue Red

Synthetic indicators:

Indicators which are chemically prepared like phenolphthalein and
methyl orange.

Indicators Colour in neutral Colour in acidic Colour in basic
medium medium medium

Phenolphthalein Colourless Colourless Pink

solution

Methyl orange Orange Red Yellow
solution

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