Core practical - Titration (AQA GCSE Chemistry): Flashcards
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15 cards from this deck
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Practise the cards
15 cards from this deck
Titration aim
Titration aim
Find exact alkali volume to neutralise acid
Burette purpose
Burette purpose
Holds alkali, adds drop by drop
Pipette purpose
Pipette purpose
Measures exactly of acid
Indicator purpose in titration
Indicator purpose in titration
Shows when neutralisation is complete
White tile purpose
White tile purpose
Makes colour changes easier to see
Pipette safety requirement
Pipette safety requirement
Use safety filler, never suck by mouth
Phenolphthalein colour in acid
Phenolphthalein colour in acid
Colourless
Titration end point colour change
Titration end point colour change
Colourless to pink
Burette reading decimal places
Burette reading decimal places
2 decimal places (final digit 0 or 5)
Read burette from which part of meniscus
Read burette from which part of meniscus
Bottom of meniscus
Definition of concordant results
Definition of concordant results
Results within of each other
Why add alkali drop by drop near end point
Why add alkali drop by drop near end point
For more accurate results
Why rinse burette with solution before use
Why rinse burette with solution before use
Prevents dilution affecting results
Why use pipette not measuring cylinder
Why use pipette not measuring cylinder
Pipette measures volumes much more accurately
Why phenolphthalein not universal indicator
Why phenolphthalein not universal indicator
Sharp, clear colour change at end point