Color of Indicators
Indicator
|
Colour in strong acid
|
Colour in weak acid
|
Colour
neutral |
Colour in weak alkali
|
Colour in strong alkali
|
pH
|
1-3
|
4-6
|
7
|
8-10
|
11-14
|
universal
|
red
|
orange/yellow
|
green
|
blue
|
purple
|
methyl
orange
|
red
|
yellow
|
yellow
|
||
phenolphthalein
|
colourless
|
colourless
|
pink
|
||
litmus
|
red
|
red
|
blue
|
blue
|
