Question

Question 17
In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?

(a) $2{\text{H}}_2\text{(l)}+{\text{O}}_2\text{(l)}\to 2{\text{H}}_2\text{O(g)}$
(b) $2{\text{H}}_2\text{(g)}+{\text{O}}_2\text{(l)}\to 2{\text{H}}_2\text{O(l)}$
(c) $2{\text{H}}_2\text{(g)}+{\text{O}}_2\text{(g)}\to 2{\text{H}}_2\text{O(l)}$
(d) $2{\text{H}}_2\text{(g)}+{\text{O}}_2\text{(g)}\to 2{\text{H}}_2\text{O(g)}$

Answer 1

Option (c) is correct.

It is because at standard conditions, both hydrogen and oxygen exist in gaseous state and water exists in liquid state.