A process uses a fluid that must be a liquid in a reservoir at 10 ∘C10\ ^\circ\text{C}10 ∘C and a gas in a chamber at 130 ∘C130\ ^\circ\text{C}130 ∘C. The melting points and boiling points of three fluids are shown in the table.
| Fluid | Melting point in ∘C^\circ\text{C}∘C | Boiling point in ∘C^\circ\text{C}∘C |
|---|---|---|
| A | -20 | 80 |
| B | 25 | 160 |
| C | -10 | 150 |
Identify the fluid that meets both conditions. Explain your choice using data from the table.
84 exam-style questions on AQA GCSE Chemistry 2.2 How bonding and structure are related to the properties of substances, covering 2.2.1a The three states of matter, 2.2.1b Limitations of the simple particle model, 2.2.2 State symbols in chemical equations, 2.2.3 Properties of ionic compounds, 2.2.4 Properties of small molecules, 2.2.5 Polymers, 2.2.6 Giant covalent structures, 2.2.7 Properties of metals and alloys, and 2.2.8 Metals as conductors. Each one has a worked solution and a mark scheme showing where the marks go.