Question: In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?
Options:
- 2H2 (l) + O2 (l) → 2H2O (g)
- 2H2 (g) + O2 (l) → 2H2O (l)
- 2H2 (g) + O2 (g) → 2H2O (l)
- 2H2 (g) + O2 (g) → 2H2O (g)