Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Titration
19 practice questions
Practice questions
1–8 of 8 · Easy
Question 1
1 mark · Easy
Answer and see the solution →Name the piece of apparatus used to deliver small, measured volumes of acid into a conical flask during a titration.
Question 2
3 marks · Easy
Answer and see the solution →(a)[1 mark]State the colour change you would see when phenolphthalein is used as the indicator and the alkali in the conical flask is just neutralised by the acid from the burette.
(b)[1 mark]Give one reason why phenolphthalein is preferred over universal indicator for titrations.
(c)[1 mark]Name the flask used to hold the solution during a titration.
Question 3
2 marks · Easy
Answer and see the solution →During a titration, a student records an initial burette reading of 6.40 cm³ and a final reading of 28.15 cm³. Calculate the volume of solution delivered from the burette.
Question 4
2 marks · Easy
Answer and see the solution →Explain why titration readings should be recorded to two decimal places.
Question 5
3 marks · Easy
Answer and see the solution →(a)[1 mark]Titration Results Titration Initial burette reading / cm³ Final burette reading / cm³ 1 0.70 18.35 2 1.40 19.80 3 2.00 20.45 Calculate the titre (volume delivered) for Titration 1.
(b)[1 mark]Which titration is likely to be the rough (trial) titration? Give a reason for your answer.
(c)[1 mark]Suggest why the average titre is calculated using only concordant results.
Question 6
1 mark · Easy
Answer and see the solution →State the name of the procedure used to determine the volume of acid needed to neutralise a fixed volume of alkali.
Question 7
3 marks · Easy
Answer and see the solution →(a)[1 mark]Describe how you would add the alkali during a titration to obtain an accurate result.
(b)[1 mark]Explain why the conical flask should be swirled during the titration.
(c)[1 mark]State how the endpoint of the titration is recognised.
Question 8
2 marks · Easy
Answer and see the solution →A student starts a titration with the burette reading at 3.55 cm³. When the reaction is complete, the reading is 20.00 cm³. Calculate the volume of solution added from the burette.