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Indicators for acids and alkalis (Universal Indicator (10 - dark turquoise…
Indicators for acids and alkalis
Litmus
Neutral - purple
Acidic - red
Alkaline - blue
Methyl orange
pH 3-5 - Orange
pH 0-3 - (acidic) - Red
pH 5-14 - yellow
Phenolphthalein
pH 0-10 - colourless
pH 10-14 (alkaline) - red
Universal Indicator
10 - dark turquoise
9 - light turquoise
11 - light blue
8 - dark green
12 - dark blue
7 - light green
13 - light purple
6 - bright yellow
14 - dark purple
5 - dark yellow
4 - very light orange
3 - light orange
3 - orange
2 - dark orange
1 - very dark orange
0 - red