A student writes some statements about how to carry out an acid-alkali titration.
Statement 1: The burette is rinsed with the acid before it is filled with the acid.
Statement 2: Universal indicator is used because it shows the exact pH at every stage.
Statement 3: The conical flask is swirled each time acid is added from the burette.
Statement 4: The burette is read at the top of the meniscus to get an accurate volume.
Which statements describe good titration technique?
1 and 2 only
1 and 3 only
2 and 4 only
3 and 4 only
57 exam-style questions on OCR GCSE Chemistry 5.1 Monitoring chemical reactions, covering 5.1.1 The technique of titration, 5.1.2 Theoretical mass, percentage yield and atom economy, 5.1.3 Concentration of a solution in mol/dm3, 5.1.4 Concentration calculations and titration results, 5.1.5 Molar gas volume and volumes of gases in reactions, and 5.1.6 Choosing a reaction pathway. Each one has a worked solution and a mark scheme showing where the marks go.