A student carries out a titration to determine the concentration of a sample of hydrochloric acid using a standard solution of sodium hydroxide. The experimental burette readings obtained during the titration runs are shown in the table below.
| Titration run | Rough | Trial 1 | Trial 2 | Trial 3 |
|---|---|---|---|---|
| Final burette reading (cm3\text{cm}^3cm3) | 24.80 | 23.15 | 23.95 | 24.50 |
| Initial burette reading (cm3\text{cm}^3cm3) | 1.50 | 0.40 | 1.10 | 1.30 |
Using only concordant results, what is the calculated mean volume of sodium hydroxide solution added?
22.93 cm322.93\text{ cm}^322.93 cm3
23.55 cm323.55\text{ cm}^323.55 cm3
22.80 cm322.80\text{ cm}^322.80 cm3
23.03 cm323.03\text{ cm}^323.03 cm3
Practise Edexcel GCSE Chemistry Acids with exam-style questions for Foundation and Higher tier. 276 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
