A technician makes four potassium nitrate solutions for a class practical.
| Solution | Mass of potassium nitrate in g | Volume of solution in cm³ |
|---|---|---|
| 1 | 12.0 | 400 |
| 2 | 2.0 | 50 |
| 3 | 6.0 | 100 |
| 4 | 6.0 | 200 |
Which solution has the highest concentration?
Solution 3
Solution 4
Solution 2
Solution 1
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.