Indicators and Titration Curves (Leaving Cert Chemistry): Flashcards
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Practise the cards
13 cards from this deck
Acid-base indicator
Acid-base indicator
Substance that changes colour depending on pH
Purpose of indicators in titration
Purpose of indicators in titration
Identify endpoint/show when neutralisation occurs
Litmus colour in acid
Litmus colour in acid
Red
Litmus colour in base
Litmus colour in base
Blue
Methyl orange pH range
Methyl orange pH range
3-5
Phenolphthalein colour in acid
Phenolphthalein colour in acid
Colourless
Phenolphthalein colour in base
Phenolphthalein colour in base
Pink
Phenolphthalein pH range
Phenolphthalein pH range
8-10
Equivalence point
Equivalence point
Where equal amounts of acid and base have reacted
Indicator for strong acid/strong base
Indicator for strong acid/strong base
Litmus or phenolphthalein (around pH 7)
Indicator for weak acid/strong base
Indicator for weak acid/strong base
Phenolphthalein (pH 8-10)
Indicator for strong acid/weak base
Indicator for strong acid/weak base
Methyl orange (pH 3-5)
Indicator for weak acid/weak base
Indicator for weak acid/weak base
No suitable indicator exists