A food-science laboratory prepares four glucose solutions.
| Solution | Mass of glucose | Volume of solution |
|---|---|---|
| P | 3.0 g | 150 cm³ |
| Q | 4.0 g | 250 cm³ |
| R | 5.0 g | 250 cm³ |
| S | 3.0 g | 200 cm³ |
Which pair of solutions has the same concentration?
Solutions Q and R
Solutions P and S
Solutions Q and S
Solutions P and R
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.