A student uses a pH probe to test three acid solutions, P, Q and R.
| Solution | Concentration of acid in solution / mol/dm3\text{mol/dm}^3mol/dm3 | pH |
|---|---|---|
| P | 0.100 | 1.0 |
| Q | 0.100 | 3.0 |
| R | 1.00 | 3.0 |
Explain which of solutions P and Q is the stronger acid.
Compare the strength of the acids in solutions Q and R.
88 exam-style questions on AQA GCSE Chemistry 4.2 Reactions of acids, covering 4.2.1a Reactions of acids with metals, 4.2.1b Redox in acid-metal reactions, 4.2.2 Neutralisation of acids and salt production, 4.2.3 Soluble salts, 4.2.4 The pH scale and neutralisation, 4.2.5a Titrations, 4.2.5b Calculating quantities in titrations, and 4.2.6 Strong and weak acids. Each one has a worked solution and a mark scheme showing where the marks go.