Final answer:
The balanced equation for the reaction of gaseous dichlorine pentoxide with water is Cl₂O₅(g) + H₂O(l) → 2HClO₃(aq). There is no need to balance the equation further as it is already balanced as written, with equal numbers of each atom on both sides of the equation.
Step-by-step explanation:
The student asked for the balanced equation and states of gaseous dichlorine pentoxide when mixed with water. Gaseous dichlorine pentoxide, Cl₂O₅, reacts with water to produce chloric acid, HClO₃. The chemical equation for this reaction is:
Cl₂O₅(g) + H₂O(l) → 2HClO₃(aq)
In this reaction, one molecule of dichlorine pentoxide gas reacts with one molecule of liquid water to form two moles of chloric acid in aqueous solution.
When balancing chemical equations, it's essential to ensure that there are equal numbers of each atom on the reactant side and the product side. This equation is balanced as written: the number of chlorine and oxygen atoms on each side of the reaction is the same.