Recommended further reading
Ebbing, D. D. and Gammon, S. D. General Chemistry, 7th edn, Houghton Mifflin, New York,
2002.
pH
Quantity to be used per
Colour in
Colour in
Indicator
range
10 mL
acid
base
Bromophenol
3.0–4.6
1 drop of 0.1% aq. solution
Yellow
Blue–violet
blue
Methyl orange
3.1–4.4
1 drop of 0.1% aq. solution
Red
Orange
Phenolphthalein 8.0–10.0
1–5 drops of 0.1% solution
Colourless Red
in 70% alcohol
Thymol blue
1.2–2.8
1–2 drops of 0.1% aq. solution Red
Yellow
RECOMMENDED FURTHER READING
15