A student dissolves 0.050 mol of potassium chloride in water to make 250 cm3\mathrm{cm^{3}}cm3 of solution.
What is the concentration of the solution?
0.0125 mol/dm3\mathrm{mol/dm^{3}}mol/dm3
0.20 mol/dm3\mathrm{mol/dm^{3}}mol/dm3
5.0 mol/dm3\mathrm{mol/dm^{3}}mol/dm3
12.5 mol/dm3\mathrm{mol/dm^{3}}mol/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.