Chemistry photo credit Nasa / Goddard Space Flight Center / Reto Stöckli Acid and Basic oxides Acid Oxides
Basics Oxides Content:- Acidic Oxides Non-metals may form Acidic Oxides. Most acidic oxides dissolve in water to form an acid. One example is sulphur dioxide, which dissolves readily in water to form sulphurous acid.
Sulphur dioxide + water > sulphurous acid
SO2(g) + H2O(l) > H2S03(aq) Other examples of acidic oxide Acidic oxides do not react with acids. However, they react with alkalis to form a salt and water. For example:- sulphur dioxide + sodium hydroxide > sodium sulphite + water
SO2(g) + 2Na2SO3(aq) > Na2SO3(aq) + H2O(l) Basic Oxides The oxides of metals are basic oxides. Most basic oxides are insoluble in water. A few oxides, such as sodium oxide and potassium oxide, dissolve readily in water. They are called alkalis. When calcium oxide (quicklime) is added to water, a vigorous reaction occurs. Calcium hydroxide is formed, which is springly soluble in water. The solution of calcium hydroxide in water is called limewater. For examples:-
calcium oxide + water > calcium hydroxide
CaO(s) + H2O(l) > Ca(OH)2(aq) Basic oxides are solids at room temperature. They react with acids to form a salt and water. for example calcium oxide + nitric acid > calcium nitrate + water
CaO(s) + 2HNO3(aq) > Ca(NO3)2(aq) + H2O(l) Refference
G.C.E'O'Level CHEMISTRY Matters Pg184-185 Done by: Khairul izzat bin zaini
Muhd anwar bin zulkarnaen
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acid and basic oxide
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