Titration can be used to determine the concentration of a potassium hydroxide solution. A pipette is used to measure 20.0 cm3 of the potassium hydroxide solution into a conical flask, which is then titrated against dilute nitric acid.
Before the titration is carried out, both the pipette and the conical flask are rinsed with distilled water.
Explain the effect, if any, that traces of distilled water left in the pipette after rinsing would have on the volume of dilute nitric acid required to reach the end-point.
Explain the effect, if any, that traces of distilled water left in the conical flask after rinsing would have on the volume of dilute nitric acid required to reach the end-point.
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.