reaction of oxide of non - metal with water , acid is formed
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All nonmetals form covalent oxides with oxygen, which react with water to form acids or with bases to form salts.
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All nonmetals form covalent oxides with oxygen, which react with water to form acids or with bases to form salts.
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Acids — non- metal oxides are called acid anhydrides (acids without water). The acid formed is an oxyacid with the same oxidation number as the non-metal in the non-metal oxide. SO3 (S is +6) + H2O --> H2SO4 (S is still +6) while SO2 (S is +4) H2O --> H2SO3 (S is still +4)
Water -- It dissolves because there is hydrogen bonding between the oxygen (from the oxide) and hydrogens (from H2O). The non-metal oxide has to be polar substance if it dissolves in water, if it is nonpolar, it will be insoluble in water.
Note: hydrogen bonding is a much weaker electrostatic attraction than the chemical bond. It is an intermolecular bond. All intermolecular bonds may act over the same distance, but the particles have much lower charge difference.
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Water -- It dissolves because there is hydrogen bonding between the oxygen (from the oxide) and hydrogens (from H2O). The non-metal oxide has to be polar substance if it dissolves in water, if it is nonpolar, it will be insoluble in water.
Note: hydrogen bonding is a much weaker electrostatic attraction than the chemical bond. It is an intermolecular bond. All intermolecular bonds may act over the same distance, but the particles have much lower charge difference.
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