As for whether acidic oxides can react with water to form corresponding acids, the following is as follows:
No, acidic oxides do not necessarily react with water to form corresponding acids. For example, Sio2 is insoluble in water, but silica is an acidic oxide. Acidic oxides are oxides that react with alkali to form only a salt and water. Most non-metal oxides are acidic oxides, and high-valent oxides of certain transition elements (such as Cro3, Mn207, etc.) are also acidic oxides.
Acidic oxides are versatile, and most can react with water to generate the corresponding acid (except for some oxides that cannot react with water, such as silicon dioxide Si2, which react with alkali to only generate a salt and water. Reacts with alkaline oxides
Common acidic oxides, carbon dioxide CO2, dinitrogen pentoxide N205, sulfur trioxide SO3, sulfur dioxide SO2, dichlorine heptaoxide C207, silicon dioxide SiO2, etc., transition High-valent oxides of group elements are generally acidic oxides.
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Acidic oxides are a type of oxide that can react with a base to form only one salt and water. . Most non-metal oxides are acidic oxides, and some high-valent oxides of transition elements (such as CrO3, Mn2O7, etc.) are also acidic oxides. For example, SO2 is called sulfurous anhydride, SO3 is called sulfuric anhydride, and CO2. It is called carbonic anhydride. Acetic anhydride is an acid anhydride but not an acidic oxide.
The hydrate corresponding to the acidic oxide is an oxyacid. For example, the hydrate corresponding to SO3 is H2SO4, and the hydrate corresponding to CO2 is H2CO3. The corresponding hydrate of SiO2 is H2SiO3, etc. Most acidic oxides can directly combine with water to form oxygen-containing acids. A few acidic oxides, SiO2, cannot react directly with water. Acidic oxides are generally directly oxidized by non-metals or oxygen-containing acids. It is produced by thermal decomposition of acid salts.
Acidic oxides include all oxides with an acidity index greater than 1. A typical acidic oxide is quartz (SiO2), which has an acidity index of 2. The solubility of 1 in the alkaline flux LiM is greater than that of other large oxides, while the solubility in acidic flux is smaller than that of oxides rich in Al2O3, P2O5 and SO3. Similar. Acidic oxides are characterized by a positive slope of the solubility curve. Similar to the case of basic oxides, fluxes with a higher lithium oxide content than LiM are more compatible with these acidic oxides, but this The flux has better fluidity and is easier to crystallize.
Except for the above four oxides, all acidic oxides have general solubility, such as Fe2O3, TiO2, WO3 and Sb2O3. Gradually rises to near the middle of LiT-LiM, and then begins to decrease, approaching 0 near 80 lithium tetraborate. However, this decrease in solubility is accidental, simply because of the influence of crystallization, the solubility should continue to be the same as that of SiO2.