A student measures 25.0 cm3\mathrm{cm^{3}}cm3 of copper sulfate solution with a concentration of 40.0 g/dm3\mathrm{g/dm^{3}}g/dm3.
The student adds water until the total volume of the solution is 100 cm3\mathrm{cm^{3}}cm3.
What is the concentration of the diluted solution?
1.0 g/dm3\mathrm{g/dm^{3}}g/dm3
8.0 g/dm3\mathrm{g/dm^{3}}g/dm3
10.0 g/dm3\mathrm{g/dm^{3}}g/dm3
160 g/dm3\mathrm{g/dm^{3}}g/dm3
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.