Question

In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?

Options

• \[\ce{2H2(1) + O2(1) -> 2H2O(g)}\]

• \[\ce{2H2(g) + O2(1) -> 2h2O(1)}\]

• \[\ce{2H2(g) + O2(g) -> 2H2O(1)}\]

• \[\ce{2H2(g) + O2(g) -> 2H2O(g)}\]

Answer 1

\[\ce{2H2(g) + O2(g) -> 2H2O(g)}\]

Explanation:

H₂ and O₂ are gases at room and elevated temperatures. The reaction is carried upon strong heating. At this temperature, H₂O formed is in gaseous state.