A student repeated a titration to determine the exact volume of dilute hydrochloric acid required to neutralise 25.0 cm3 of sodium hydroxide solution.
The initial volume measuring steps were completed carefully using a volumetric pipette and a burette.
Explain two other practical steps that should be taken during the titration to ensure that an accurate titre volume is obtained.
157 exam-style questions on Edexcel GCSE Chemistry 6.2 Quantitative analysis, covering 6.2.1 Concentration in mol dm⁻³ and titration calculations, 6.2.2 Percentage yield and why actual yield falls short, 6.2.3 Atom economy of a reaction, 6.2.4 Choosing a reaction pathway, and 6.2.5 Molar volume of gases and Avogadro's law. Each one has a worked solution and a mark scheme showing where the marks go.