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Acids, bases and salt preparations

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Question 10

Dilute sulfuric acid can be used to make soluble and insoluble salts.

a.

A student plans an experiment to obtain a pure, dry sample of the soluble salt, sodium sulfate, from dilute sulfuric acid.

The student does a titration to find the volume of sulfuric acid needed for complete reaction with the other reactant.

Describe the steps he should take in his titration. Refer to these pieces of apparatus in your answer:

  • pipette
  • burette
  • conical flask
[4]
b.

The diagram shows the burette readings in one titration.

Burette readings

Use these readings to complete the table, giving all values to the nearest 0.05 cm30.05\text{ cm}^30.05 cm3.

ObservationVolume (cm3\text{cm}^3cm3)
burette reading after adding solution
burette reading before adding solution
volume of solution added
[3]
c.

The student plans a different experiment to obtain a pure, dry sample of the insoluble salt, barium sulfate, from dilute sulfuric acid.

Describe the steps he should take in his experiment.

[4]

Acids, bases and salt preparations Questions

  1. IGCSE
  2. /Chemistry
  3. /Acids, bases and salt preparations