Write the chemical equation for a non – metallic oxide reaction with water?
Answers
Non-Metallic oxides react with bases to give salts and water. Here metal in base reacts with carbon dioxide to form a salt. Hydrogen adds with oxygen in non- metal oxide to form water. This is similar to neutralisation reaction so non metallic oxides are acidic in nature.
Explanation:
All nonmetals form covalent oxides with oxygen, which react with water to form acids or with bases to form salts. Most nonmetal oxides are acidic and form oxyacids, which in turn yield hydronium ions (H3O+) in aqueous solution. There are two general statements that describe the behaviour of acidic oxides. First, oxides such as sulfur trioxide (SO3) and dinitrogen pentoxide (N2O5), in which the nonmetal exhibits one of its common oxidation numbers, are known as acid anhydrides. These oxides react with water to form oxyacids, with no change in the oxidation number of the nonmetal; for example,
N2O5 + H2O → 2HNO3.
Second, those oxides in which the metal does not exhibit one of its common oxidation numbers, such as nitrogen dioxide (NO2) and chlorine dioxide (ClO2), also react with water. In these reactions, however, the nonmetal is both oxidized and reduced (i.e., its oxidation number is increased and decreased, respectively). A reaction in which the same element is both oxidized and reduced is called a disproportionation reaction. In the following disproportionation reaction, N4+ is reduced to N2+ (in NO) and oxidized to N5+ (in HNO3).
3NO2 + H2O → 2HNO3 + NO