QUESTION 12   Dilute sulfuric acid can be used to make…

QUESTION 12   Dilute sulfuric аcid cаn be used tо mаke sоluble and insоluble salts.   a A student plans an experiment to obtain a pure, dry sample of the soluble salt, sodium sulfate, from dilute sulfuric acid.   a(i) The student does a titration to find the volume of sulfuric acid needed for complete reaction with the other reactant.   Describe the steps she should take in her titration. Refer to these pieces of apparatus in your answer.·            pipette·            burette·            conical flask (5) a(ii) The diagram (see diagram pdf) shows the burette readings in one titration.   Use these readings to complete the table, giving all values to the nearest 0.05 cm3.   Burette reading in cm3 after adding solution Burette reading in cm3 before adding solution Volume of solution added in cm3 (3) b 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 she should take in her experiment. (5)