When heated magnesium ribbon reacts with steam, a vigorous reaction occurs to produce magnesium oxide and hydrogen gas.
Which row in the table shows the correct state symbols for steam and magnesium oxide in the balanced chemical equation for this reaction?
| State symbol for steam | State symbol for magnesium oxide | |
|---|---|---|
| A | (l)\text{(l)}(l) | (aq)\text{(aq)}(aq) |
| B | (g)\text{(g)}(g) | (s)\text{(s)}(s) |
| C | (l)\text{(l)}(l) | (s)\text{(s)}(s) |
| D | (g)\text{(g)}(g) | (aq)\text{(aq)}(aq) |
Row A: steam is (l)\text{(l)}(l), magnesium oxide is (aq)\text{(aq)}(aq)
Row B: steam is (g)\text{(g)}(g), magnesium oxide is (s)\text{(s)}(s)
Row C: steam is (l)\text{(l)}(l), magnesium oxide is (s)\text{(s)}(s)
Row D: steam is (g)\text{(g)}(g), magnesium oxide is (aq)\text{(aq)}(aq)
230 exam-style questions on Edexcel GCSE Chemistry 1.1 Formulae, equations and hazards, covering 1.1.1 Formulae, word and balanced equations, 1.1.2 Balanced ionic equations, and 1.1.3 Hazard symbols and risk in practical work. Each one has a worked solution and a mark scheme showing where the marks go.