AQA A-Level Chemistry Paper 3
EXAM | ALL QUESTIONS AND
CORRECT ANSWERS | GRADED A+
| VERIFIED ANSWERS | NEWEST
VERSION 2025
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Terms in this set (52)
Key apparatus Volumetric flask, pipette and filler,
for preparation burette, conical flask, white tile.
of a standard
solution?
, How do you Use a mass balance to weigh solute
ensure an accurately, dissolve fully in
accurate deionised water, and rinse all
standard equipment into the volumetric flask
solution? before making up to the line.
Why is a white To help detect the colour change
tile used in more clearly at the end point.
titrations?
Phenolphthalein (pink in alkali,
What indicators
colourless in acid) or methyl orange
are used in acid-
(yellow in alkali, red in acid) -
base titrations
depending on strong/weak acid or
and why?
base used.
Repeat until concordant titres (within
How do you
0.1 cm³), swirl the flask, add
ensure accurate
dropwise near end point, rinse
titration results?
burette tip.
How is heat ∆Q = mc∆T
energy
calculated?
EXAM | ALL QUESTIONS AND
CORRECT ANSWERS | GRADED A+
| VERIFIED ANSWERS | NEWEST
VERSION 2025
Save
Terms in this set (52)
Key apparatus Volumetric flask, pipette and filler,
for preparation burette, conical flask, white tile.
of a standard
solution?
, How do you Use a mass balance to weigh solute
ensure an accurately, dissolve fully in
accurate deionised water, and rinse all
standard equipment into the volumetric flask
solution? before making up to the line.
Why is a white To help detect the colour change
tile used in more clearly at the end point.
titrations?
Phenolphthalein (pink in alkali,
What indicators
colourless in acid) or methyl orange
are used in acid-
(yellow in alkali, red in acid) -
base titrations
depending on strong/weak acid or
and why?
base used.
Repeat until concordant titres (within
How do you
0.1 cm³), swirl the flask, add
ensure accurate
dropwise near end point, rinse
titration results?
burette tip.
How is heat ∆Q = mc∆T
energy
calculated?
