An environmental scientist analysed a sample of groundwater collected near a nature reserve. The results of the analysis are shown in Table 1.
Table 1
| Parameter | Value |
|---|---|
| Ion concentration | (mg/dm³) |
| Sodium ions | 142 |
| Potassium ions | 4.8 |
| Bicarbonate ions | 210 |
| Acidity / Alkalinity | |
| pH | 7 |
State the information from Table 1 that shows that the groundwater sample is neutral.
276 exam-style questions on Edexcel GCSE Chemistry 4.1 Acids, covering 4.1.1 Acids, alkalis and the pH scale, 4.1.2 Hydrogen ion concentration and pH, 4.1.3 Dilute and concentrated, weak and strong acids, 4.1.4 Bases, alkalis and the reactions of acids, 4.1.5 Chemical tests for hydrogen and carbon dioxide, 4.1.6 Neutralisation as a reaction of acids with bases, 4.1.7 Preparing soluble salts, and 4.1.8 Solubility rules and preparing insoluble salts. Each one has a worked solution and a mark scheme showing where the marks go.