A student dissolves 4.0 g of sodium hydroxide in water to make 250 cm3\mathrm{cm^{3}}cm3 of solution.
What is the concentration of the solution?
0.016 g/dm3\mathrm{g/dm^{3}}g/dm3
1.0 g/dm3\mathrm{g/dm^{3}}g/dm3
16.0 g/dm3\mathrm{g/dm^{3}}g/dm3
62.5 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.