Titration Colour Changes
© SLSS Science
Limerick Education Centre
Acid/ Base Titrations
Hydrochloric Acid
v
Sodium carbonate
HCl
Indicator:- Methyl Orange
Na2CO3
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Red
Acid/ Base Titrations
Ethanoic Acid v Sodium Hydroxide
CH3COOH
Indicator:- Phenolphthalein
Colourless
NaOH
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Redox Titrations
Potassium Permanganate v
Ammonium Iron (II) Sulphate
KMnO4
Indicator:- Potassium Permanganate
Persisting
Pale Pink
(NH4)2SO4.Fe(ll)SO4
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Limerick Education Centre
Edta Titration
Hard Water (Ca++) v Edta
edta
Indicator:- Eriochrome Black T
Red
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Blue
Redox Titrations
Iodine v Thiosulphate
Indicator:-Starch
End
Point
Add Starch
I2 Soln. Brown
© SLSS Science
I2 Soln. Pale Yellow
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Blue Black
Colourless
• Summary
Hydrochloric Acid
v
Indicator
orange
© SLSS Science
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Sodium carbonate
Methyl Orange
to
red
Ethanoic Acid v Sodium Hydroxide
Indicator
Pink
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Phenolphthalein
to
Colourless
Potassium Permanganate
v Ammonium Iron (II) Sulphate
KMnO4 is it’s own Indicator
Indicator
Colourless
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Limerick Education Centre
to
Permanent Pink Tinge (Persistant Pink)
Hard Water (Ca++)
Indicator
Red
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v Edta
Eriochrome Black T
to
Blue
Iodine
Indicator
Brown to
© SLSS Science
v Thiosulphate
Starch indicator
Pale Yellow to
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Blue/black to
Colourless