A technician has 150 cm3\mathrm{cm^{3}}cm3 of potassium sulfate solution, K2SO4\mathrm{K_{2}SO_{4}}K2SO4, with a concentration of 0.300 mol/dm3\mathrm{mol/dm^{3}}mol/dm3.
Water is added until the total volume of the solution is 600 cm3\mathrm{cm^{3}}cm3.
Relative atomic mass (ArA_rAr): K = 39.1 S = 32.1 O = 16.0
Calculate the concentration of the diluted solution in g/dm3\mathrm{g/dm^{3}}g/dm3.
152 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.