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14 questions
Why is indicator added to a titration?
To test for acids
to show the endpoint
to prove a reaction has happened
to show a colour
When should you stop a titration?
When you have added equal volumes
When the indicator changes colour
When you run out of solution
When the solution is no longer acidic
What is the reading on this burette?
24.00cm3
25.80cm3
24.20cm3
23.90cm3
What is the correct sequence to clean a burette?
deionised water, tap water, solution to be filled
tap water, deionised water, solution to be filled
solution to be filled, deionised water, tap water
solution to be filled, tap water, deionised water
What is the correct sequence to clean a conical flask?
deionised water, tap water, solution to be filled
tap water, deionised water, solution to be filled
tap water, deionised water
deionised water, tap water
Hot to remove air bubble in the burette?
no need to remove air bubbles
shake the burette vigorously until the air bubble disappear
tap the burette gently until the air bubble disappear
open the tap to flush out the air bubbles
When filling up the pipette, where should you position the pipette?
On the surface of the solution.
Submerge in the solution.
During titration, when there are droplets of solution on the walls of the conical flask, you should .................
ignore as it won't affect the results
rinse the wall of the conical flask with solution in the burette
rinse the wall of the conical flask with deionised water
rinse the wall of the conical flask with tap water
During titration, you should swirl the conical flask constantly.
TRUE
FALSE
Which of the headings should be included in the titration result table?
final volume, initial volume, volume of solution
final reading, initial reading, reading of solution
final reading, initial reading, volume of solution
final volume, initial volume, reading of solution
All burette readings are recorded to nearest ________.
0.1cm3
0.5cm3
0.01cm3
0.05cm3
Consistent readings are titre values that are within _______ apart.
0.01cm3
0.02cm3
0.1cm3
0.2cm3
What is the average titre needed for neutralisation?
25.20cm3
59.70cm3
25.00cm3
25.40cm3
30cm3 of NaOH is neutralised by 12.3cm3 of 0.2mol/dm3 HCl.
What is the concentration of the NaOH?
82 mol/dm3
0.82 mol/dm3
0.49 mol/dm3
0.082 mol/dm3
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