The table shows the ions present in two electrolytes.
| Electrolyte | Ions present |
|---|---|
| Calcium bromide solution | Ca2+\text{Ca}^{2+}Ca2+, Br−\text{Br}^{-}Br−, H+\text{H}^{+}H+ and OH−\text{OH}^{-}OH− |
| Molten calcium bromide | Ca2+\text{Ca}^{2+}Ca2+ and Br−\text{Br}^{-}Br− |
Explain why the lists of ions present in the two electrolytes are different.
76 exam-style questions on AQA GCSE Chemistry 4.3 Electrolysis, covering 4.3.1a The process of electrolysis, 4.3.1b Half equations in electrolysis, 4.3.2 Electrolysis of molten ionic compounds, 4.3.3 Using electrolysis to extract metals, 4.3.4 Electrolysis of aqueous solutions, and 4.3.5 Representation of reactions at electrodes as half equations. Each one has a worked solution and a mark scheme showing where the marks go.